Add some documentation to sync_did_finish hook

qt/aqt/gui_hooks.py

@@ -2722,6 +2722,10 @@ style_did_init = _StyleDidInitFilter()
 
 
 class _SyncDidFinishHook:
+    """Executes after the sync of the collection concluded.
+
+    Note that the media sync did not necessarily finish at this point."""
+
     _hooks: List[Callable[[], None]] = []
 
     def append(self, cb: Callable[[], None]) -> None:

qt/tools/genhooks_gui.py

@@ -563,7 +563,13 @@ gui_hooks.webview_did_inject_style_into_page.append(mytest)
         doc="""Allows changing the list of cards to delete.""",
     ),
     Hook(name="sync_will_start", args=[]),
-    Hook(name="sync_did_finish", args=[]),
+    Hook(
+        name="sync_did_finish",
+        args=[],
+        doc="""Executes after the sync of the collection concluded.
+
+        Note that the media sync did not necessarily finish at this point.""",
+    ),
     # Adding cards
     ###################
     Hook(