Issue #22812: Fix unittest discovery examples.

Patch from Pam McA'Nulty.

Doc/library/unittest.rst

@@ -271,8 +271,8 @@ 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

@@ -894,6 +894,7 @@ Daniel May
 Madison May
 Lucas Maystre
 Arnaud Mazin
+Pam McA'Nulty
 Matt McClure
 Rebecca McCreary
 Kirk McDonald

Misc/NEWS

@@ -449,6 +449,9 @@ C API
 Documentation
 -------------
 
+- Issue #22812: Fix unittest discovery examples.
+  Patch from Pam McA'Nulty.
+
 - Issue #24129: Clarify the reference documentation for name resolution.
   This includes removing the assumption that readers will be familiar with the
   name resolution scheme Python used prior to the introduction of lexical