📚 docs(readme): refine section headings

Author: o6uoq

README.md

@@ -15,7 +15,7 @@ brew tap o6uoq/homebrew-tap
 brew install o6uoq/homebrew-tap/fuzmit
 ```
 
-## ⚡ Quick start
+## ⚡ Quick Start
 
 ```bash
 fuzmit --help
@@ -24,7 +24,7 @@ fuzmit --type feat -m "add jira scope detection"
 fuzmit --type feat --scope -m "prompt for optional scope"
 ```
 
-## 🧭 Flags
+## 🎌 Flags
 
 - `--type <type>` required commit type: `build|chore|ci|docs|feat|fix|perf|refactor|style|test`
 - `--scope <scope>` optional scope
@@ -34,7 +34,7 @@ fuzmit --type feat --scope -m "prompt for optional scope"
 - `--no-emojis` disable emojis in picker/help output
 - `--override` bypass main branch protection
 
-## 🧪 Env defaults
+## 🌱 Environment Variables
 
 - `FUZMIT_SCOPE=true|false` prompt for scope if `--scope` is not provided
 - `FUZMIT_JIRA_SCOPE=true|false` detect Jira scope from branch and ignore `--scope` / `FUZMIT_SCOPE`