Every bmesh layer access attribute except `BMLayerAccessVert.shape` was missing the first colon in `:type:`, resulting in problems for tools that process the RST e.g.: formatting errors in the [PyAPI docs](https://docs.blender.org/api/4.1/bmesh.types.html#bmesh.types.BMLayerAccessVert.shape) and attributes with no type in fake-bpy-module. Pull Request: https://projects.blender.org/blender/blender/pulls/122060