fix: resolve markdownlint issues in documentation

- Remove trailing whitespace from inline code
- Add blank line before table
- Fix heading levels to ensure proper hierarchy
- Convert bare URLs to markdown links

commands/pm2.md

@@ -247,6 +247,7 @@ After all files generated, output:
 ## PM2 Init Complete
 
 **Services:**
+
 | Port | Name | Type |
 |------|------|------|
 | {port} | {name} | {type} |
@@ -254,10 +255,10 @@ After all files generated, output:
 **Claude Commands:** /pm2-all, /pm2-all-stop, /pm2-{port}, /pm2-{port}-stop, /pm2-logs, /pm2-status
 
 **Terminal Commands:**
-# First time (with config file)
+## First time (with config file)
 pm2 start ecosystem.config.cjs && pm2 save
 
-# After first time (simplified)
+## After first time (simplified)
 pm2 start all          # Start all
 pm2 stop all           # Stop all
 pm2 restart all        # Restart all