fix: simplify assistant shortcut

apps/docs/docs/management/assistant.mdx

@@ -9,7 +9,7 @@ tags:
 # Assistant
 
 Administrators can configure the instance-wide AI assistant from **Management → Assistant**.
-It is available to signed-in users from the user menu, with `Cmd/Ctrl + Shift + K`, and from the
+It is available to signed-in users from the user menu, with `Shift + A`, and from the
 `Cmd/Ctrl + K` command menu. **Ask Homarr Assistant** is always available as a local result in the default
 search. Selecting it with an existing query sends that query in the background; selecting it without a
 query turns the command-menu search field into a prompt composer. Press
@@ -21,7 +21,8 @@ avatar shows a thinking indicator. The activity bar can be opened to follow the
 responses add an unread count to the user menu until they are opened or dismissed. The expanded
 conversation has a minimize action that returns it to the activity bar without interrupting a response.
 
-`Cmd/Ctrl + Shift + K` opens the compact conversation panel directly.
+`Shift + A` opens the compact conversation panel directly. The shortcut is ignored while typing in text
+fields, selectors, and editable content.
 
 When the assistant is unavailable, its command-menu result remains visible but disabled and explains that
 an administrator must configure and enable it.