update README.md for improved clarity and formatting

- Changed code block syntax from plain to text for better readability.
- Enhanced table formatting for sub-tools, flags, and options to improve clarity and organization.
- Updated output directory example to use text formatting for consistency.

These modifications enhance the documentation's usability and presentation, making it easier for users to understand the system configuration generation process.

Signed-off-by: Taekjin LEE <taekjin.lee@tier4.jp>

Author: technolojin

tools/system-config-generator/README.md

@@ -9,7 +9,7 @@ Unified pipeline that turns a ROS 2 launch file into skeleton **Autoware System
 
 ## How it works
 
-```
+```text
 ┌──────────────────────────────────────────────────────────┐
 │  Phase 1 — Parse launcher                                │
 │  launch_unifier flattens the launch tree into a single   │
@@ -30,10 +30,10 @@ Unified pipeline that turns a ROS 2 launch file into skeleton **Autoware System
 
 ### Sub-tools used
 
-| Sub-tool | Role |
-|----------|------|
-| `launch_unifier/` (vendored) | Evaluates launch files and serialises the resolved entity tree to flat XML |
-| `topology-analyzer/` (sibling tool) | Captures live node pub/sub/service topology from a running ROS 2 system |
+| Sub-tool                                                                                              | Role                                                                       |
+| ----------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
+| `launch_unifier/` (vendored from [xmfcx/launch_unifier](https://github.com/xmfcx/launch_unifier.git)) | Evaluates launch files and serialises the resolved entity tree to flat XML |
+| `topology-analyzer/` (sibling tool)                                                                   | Captures live node pub/sub/service topology from a running ROS 2 system    |
 
 ---
 
@@ -122,46 +122,46 @@ python3 run_launch_unifier.py \
 
 ### Launch source (one required)
 
-| Flag | Description |
-|------|-------------|
-| `--launch-xml FILE` | Pre-generated `generated.launch.xml` — skips launch_unifier |
-| `--launch-package PKG` | ROS 2 package owning the launch file (use with `--launch-file`) |
-| `--launch-file FILE` | Launch file name inside the package share |
-| `--launch-path PATH` | Absolute path to a launch file (alternative to `--launch-package`) |
-| `--launch-args key:=val ...` | Space-separated launch arguments forwarded to the launch file |
-| `--launch-debug` | Enable launch debug logging |
+| Flag                         | Description                                                        |
+| ---------------------------- | ------------------------------------------------------------------ |
+| `--launch-xml FILE`          | Pre-generated `generated.launch.xml` — skips launch_unifier        |
+| `--launch-package PKG`       | ROS 2 package owning the launch file (use with `--launch-file`)    |
+| `--launch-file FILE`         | Launch file name inside the package share                          |
+| `--launch-path PATH`         | Absolute path to a launch file (alternative to `--launch-package`) |
+| `--launch-args key:=val ...` | Space-separated launch arguments forwarded to the launch file      |
+| `--launch-debug`             | Enable launch debug logging                                        |
 
 ### Runtime snapshot (optional)
 
-| Flag | Default | Description |
-|------|---------|-------------|
-| `--graph-json FILE` | — | Path to a pre-captured graph snapshot JSON |
-| `--live-snapshot` | off | Capture a live snapshot from the running ROS 2 system |
-| `--snapshot-spin-seconds N` | `3.0` | Discovery wait time for `--live-snapshot` |
-| `--snapshot-params` | `names` | Parameter depth for `--live-snapshot`: `none`, `names`, or `values` |
+| Flag                        | Default | Description                                                         |
+| --------------------------- | ------- | ------------------------------------------------------------------- |
+| `--graph-json FILE`         | —       | Path to a pre-captured graph snapshot JSON                          |
+| `--live-snapshot`           | off     | Capture a live snapshot from the running ROS 2 system               |
+| `--snapshot-spin-seconds N` | `3.0`   | Discovery wait time for `--live-snapshot`                           |
+| `--snapshot-params`         | `names` | Parameter depth for `--live-snapshot`: `none`, `names`, or `values` |
 
 ### Generation options
 
-| Flag | Default | Description |
-|------|---------|-------------|
-| `--system-name NAME` | `GeneratedSystem` | System name (file prefix and YAML `name` field) |
-| `--output-dir DIR` | `generated/` | Output directory |
-| `--compute-unit NAME` | `main_ecu` | Compute unit label for all components |
-| `--system-depth N` | `1` | Namespace depth for system.yaml components. Sub-modules below this depth are generated recursively. |
-| `--parameter-sets` | off | Generate `parameter_set` YAML files per top-level component |
-| `--component-map FILE` | `config/component_map.yaml` | Namespace → name/entity override YAML |
-| `--no-modules` | off | Skip per-component module YAML files |
-| `--no-node-configs` | off | Skip generating `*.node.yaml` for undefined node entities (on by default) |
-| `--package-map FILE` | auto | `_package_map.yaml` for entity discovery (auto via ament_index) |
-| `--verbose` | off | Print progress and statistics |
+| Flag                   | Default                     | Description                                                                                         |
+| ---------------------- | --------------------------- | --------------------------------------------------------------------------------------------------- |
+| `--system-name NAME`   | `GeneratedSystem`           | System name (file prefix and YAML `name` field)                                                     |
+| `--output-dir DIR`     | `generated/`                | Output directory                                                                                    |
+| `--compute-unit NAME`  | `main_ecu`                  | Compute unit label for all components                                                               |
+| `--system-depth N`     | `1`                         | Namespace depth for system.yaml components. Sub-modules below this depth are generated recursively. |
+| `--parameter-sets`     | off                         | Generate `parameter_set` YAML files per top-level component                                         |
+| `--component-map FILE` | `config/component_map.yaml` | Namespace → name/entity override YAML                                                               |
+| `--no-modules`         | off                         | Skip per-component module YAML files                                                                |
+| `--no-node-configs`    | off                         | Skip generating `*.node.yaml` for undefined node entities (on by default)                           |
+| `--package-map FILE`   | auto                        | `_package_map.yaml` for entity discovery (auto via ament_index)                                     |
+| `--verbose`            | off                         | Print progress and statistics                                                                       |
 
 ---
 
 ## Output layout
 
 All output is contained under a single `--output-dir`:
 
-```
+```text
 <output-dir>/
 └── YYYYMMDD_HHMMSS/                             (timestamp of the run)
     ├── unified_launch/                          (only when launch_unifier runs)