docs: move callbacks down

To improve readability of the docs

apidocs/python/src/prof.py

@@ -25,6 +25,7 @@ class CommandCallback(Protocol):
         def my_command(*command_parameters: str) -> None:
             prof.cons_show(f"Received: {command_parameters}")
 
+    .. :noindex:
     """
     def __call__(self, *command_parameters: str) -> None: ...
 
@@ -38,6 +39,7 @@ class TimedCallback(Protocol):
         def my_timed_callback() -> None:
             prof.cons_show("Timer triggered")
 
+    .. :noindex:
     """
     def __call__(self) -> None: ...
 
@@ -53,6 +55,7 @@ class WindowCallback(Protocol):
         def my_window_callback(win_id: str, message: str) -> None:
             prof.win_show(win_id, f"Processed: {message}")
 
+    .. :noindex:
     """
     def __call__(self, win_id: str, message: str) -> None: ...