Correct grammar in Editor Setup header (#381)

Setup is a noun; Set up is the verb. Should happen in the main page as well on the website!

Author: tooshay

README.md

@@ -39,7 +39,7 @@ Feel free to add the generated MCP configuration file, guideline files (`.mcp.js
 
 Once Laravel Boost has been installed, you're ready to start coding with Cursor, Claude Code, or your AI agent of choice.
 
-### Setup Your Code Editors
+### Set up Your Code Editors
 
 #### PhpStorm