Update the keyboard shortcut to open the editor help

The shortcut was changed in 3.3.

This also lists the macOS-specific shortcut in the editor introduction.

getting_started/introduction/first_look_at_the_editor.rst

@@ -138,7 +138,7 @@ Godot comes with a built-in class reference.
 You can search for information about a class, method, property, constant, or
 signal by:
 
-1. Pressing :kbd:`Shift + F1` anywhere in the editor.
+1. Pressing :kbd:`F1` (or :kbd:`Alt + Space` on macOS) anywhere in the editor.
 2. Clicking the "Search Help" button in the top-right of the Script main screen.
 3. Clicking on the Help menu and Search.
 4. Clicking while pressing the :kbd:`Ctrl` key on a class name,

tutorials/editor/default_key_mapping.rst

@@ -29,7 +29,7 @@ General Editor Actions
 +-----------------------+-------------------------------+------------------------------+----------------------------------+
 | Open Script Editor    | :kbd:`Ctrl + F3`              | :kbd:`Alt + 3`               | ``editor/editor_script``         |
 +-----------------------+-------------------------------+------------------------------+----------------------------------+
-| Search Help           | :kbd:`Shift + F1`             | :kbd:`Alt + Space`           | ``editor/editor_help``           |
+| Search Help           | :kbd:`F1`                     | :kbd:`Alt + Space`           | ``editor/editor_help``           |
 +-----------------------+-------------------------------+------------------------------+----------------------------------+
 | Distraction Free Mode | :kbd:`Ctrl + Shift + F11`     | :kbd:`Cmd + Ctrl + D`        | ``editor/distraction_free_mode`` |
 +-----------------------+-------------------------------+------------------------------+----------------------------------+