Small manual formatting improvements

This adds a trailing "," in a few multi-line function calls in
test/, where putting one argument per line was intended and is
clearer. This is so that when black is run over test/, it
recognizes the form and avoids collapsing it.

test/test_commit.py

@@ -173,12 +173,12 @@ def check_entries(path, changes):
                 ".github/workflows/Future.yml" : {
                     'insertions': 57,
                     'deletions': 0,
-                    'lines': 57
+                    'lines': 57,
                 },
                 ".github/workflows/test_pytest.yml" : {
                     'insertions': 0,
                     'deletions': 55,
-                    'lines': 55
+                    'lines': 55,
                 },
             }
             assert path in expected

test/test_docs.py

@@ -481,7 +481,7 @@ def test_references_and_objects(self, rw_dir):
     @pytest.mark.xfail(
         sys.platform == "cygwin",
         reason="Cygwin GitPython can't find SHA for submodule",
-        raises=ValueError
+        raises=ValueError,
     )
     def test_submodules(self):
         # [1-test_submodules]

test/test_repo.py

@@ -1115,7 +1115,7 @@ def test_repo_odbtype(self):
     @pytest.mark.xfail(
         sys.platform == "cygwin",
         reason="Cygwin GitPython can't find submodule SHA",
-        raises=ValueError
+        raises=ValueError,
     )
     def test_submodules(self):
         self.assertEqual(len(self.rorepo.submodules), 1)  # non-recursive

test/test_submodule.py

@@ -469,7 +469,7 @@ def test_base_bare(self, rwrepo):
     @pytest.mark.xfail(
         sys.platform == "cygwin",
         reason="Cygwin GitPython can't find submodule SHA",
-        raises=ValueError
+        raises=ValueError,
     )
     @skipIf(
         HIDE_WINDOWS_KNOWN_ERRORS,

test/test_util.py

@@ -159,7 +159,7 @@ def test_lock_file(self):
     @pytest.mark.xfail(
         sys.platform == "cygwin",
         reason="Cygwin fails here for some reason, always",
-        raises=AssertionError
+        raises=AssertionError,
     )
     def test_blocking_lock_file(self):
         my_file = tempfile.mktemp()