Fix broken docstring, add note on add_watch errors.

The `:` caused Sphinx to think this was a type description.

Author: HexDecimal

tcod/event.py

@@ -1092,6 +1092,7 @@ def add_watch(callback: _EventCallback) -> _EventCallback:
     .. warning::
         How uncaught exceptions in a callback are handled is not currently defined by tcod.
         They will likely be handled by :any:`sys.unraisablehook`.
+        This may be later changed to pass the excpetion to a :any`tcod.event.get` or :any:`tcod.event.wait` call.
 
     Args:
         callback (Callable[[Event], None]):

tcod/sdl/render.py

@@ -73,7 +73,7 @@ def height(self) -> int:
 
     @property
     def alpha_mod(self) -> int:
-        """Texture alpha modulate value, can be set to: 0 - 255."""
+        """Texture alpha modulate value, can be set to 0 - 255."""
         out = ffi.new("uint8_t*")
         _check(lib.SDL_GetTextureAlphaMod(self.p, out))
         return int(out[0])