Add mention of Auto Reload Scripts on External Change option to the e… (#9887)

* Add mention of Auto Reload Scripts on External Change option to the external editor tutorial

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Co-authored-by: Ivan Skorikov <[email protected]>
Co-authored-by: A Thousand Ships <[email protected]>

tutorials/editor/external_editor.rst

@@ -65,6 +65,11 @@ Some example **Exec Flags** for various editors include:
     For Emacs, you can call ``emacsclient`` instead of ``emacs`` if
     you use the server mode.
 
+Automatically reloading your changes
+------------------------------------
+To have the Godot Editor automatically reload any script that has been changed by an external text editor,
+enable **Editor > Editor Settings > Text Editor > Behavior > Auto Reload Scripts on External Change**.
+
 Using External Editor in Debugger
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