Docs: update examples to use Context.temp_override

doc/python_api/examples/bpy.ops.py

@@ -33,6 +33,11 @@ There are 3 optional positional arguments (documented in detail below).
    bpy.ops.test.operator(override_context, execution_context, undo)
 
 - override_context - ``dict`` type.
+
+  .. deprecated:: 3.2
+
+     :class:`bpy.types.Context.temp_override` should be used instead of this argument.
+
 - execution_context - ``str`` (enum).
 - undo - ``bool`` type.