docs: Add spice feedback CLI command reference

Add documentation for the new `spice feedback` command that opens
the Spice.ai community Slack in the user's browser.

Author: claudespice

website/docs/cli/reference/feedback.md

@@ -0,0 +1,29 @@
+---
+title: "feedback"
+sidebar_label: "feedback"
+pagination_prev: null
+pagination_next: null
+---
+Open the Spice.ai community Slack in the default browser to share feedback.
+
+### Usage
+
+```shell
+spice feedback
+```
+
+#### Flags
+
+- `-h`, `--help`   Print this help message
+
+### Example
+
+```shell
+> spice feedback
+
+Opening Spice.ai community Slack in your default browser:
+
+  https://spice.ai/slack
+
+If the browser does not open, visit the URL above manually.
+```

website/docs/cli/reference/index.md

@@ -27,6 +27,7 @@ spice [command] [--help]
 | [connect](reference/connect)       | Connect to a Spice.ai Cloud Platform app                               |
 | [dataset](reference/dataset)       | Dataset operations (configure datasets)                                |
 | [datasets](reference/datasets)     | Lists datasets loaded by the Spice runtime                             |
+| [feedback](reference/feedback)     | Open the Spice.ai community Slack to share feedback                    |
 | help                               | Help about any command                                                 |
 | [init](reference/init)             | Initialize Spice app - creates a new spicepod.yaml                     |
 | [install](reference/install)       | Install or reinstall the Spice.ai runtime                              |