Fix "Python" casing in a few places (GH-9001)

diff --git a/Doc/library/unittest.mock-examples.rst b/Doc/library/unittest.mock-examples.rst
index 5bf3d57..65dee7c 100644
--- a/Doc/library/unittest.mock-examples.rst
+++ b/Doc/library/unittest.mock-examples.rst
@@ -392,7 +392,7 @@
     >>> MyTest('test_something').test_something()
 
 When you nest patch decorators the mocks are passed in to the decorated
-function in the same order they applied (the normal *python* order that
+function in the same order they applied (the normal *Python* order that
 decorators are applied). This means from the bottom up, so in the example
 above the mock for ``test_module.ClassName2`` is passed in first.