Fix: PyDocs: typo fix in example

by -> be

Pull Request: https://projects.blender.org/blender/blender/pulls/144448

doc/python_api/examples/bpy.types.Context.temp_override.2.py

@@ -1,6 +1,6 @@
 """
 Overriding the context can be useful to set the context after loading files
-(which would otherwise by None). For example:
+(which would otherwise be None). For example:
 """
 
 import bpy