Issue #22812: Fix unittest discovery examples.

Patch from Pam McA'Nulty.

Doc/library/unittest.rst

@@ -278,8 +278,8 @@ The :option:`-s`, :option:`-p`, and :option:`-t` options can be passed in
 as positional arguments in that order. The following two command lines
 are equivalent::
 
-   python -m unittest discover -s project_directory -p '*_test.py'
-   python -m unittest discover project_directory '*_test.py'
+   python -m unittest discover -s project_directory -p "*_test.py"
+   python -m unittest discover project_directory "*_test.py"
 
 As well as being a path it is possible to pass a package name, for example
 ``myproject.subpackage.test``, as the start directory. The package name you

Misc/ACKS

@@ -920,6 +920,7 @@ Daniel May
 Madison May
 Lucas Maystre
 Arnaud Mazin
+Pam McA'Nulty
 Matt McClure
 Jack McCracken
 Rebecca McCreary

Misc/NEWS

@@ -29,6 +29,9 @@ Library
 Documentation
 -------------
 
+- Issue #22812: Fix unittest discovery examples.
+  Patch from Pam McA'Nulty.
+
 
 What's New in Python 3.5.0 release candidate 2?
 ===============================================