Fix the name of the "executes git" test

That test is not testing whether or not a shell is used (nor does
it need to test that), but just whether the library actually runs
git, passes an argument to it, and returns text from its stdout.

Author: EliahKagan

test/test_git.py

@@ -73,7 +73,7 @@ def test_it_transforms_kwargs_into_git_command_arguments(self):
         res = self.git.transform_kwargs(**{"s": True, "t": True})
         self.assertEqual({"-s", "-t"}, set(res))
 
-    def test_it_executes_git_to_shell_and_returns_result(self):
+    def test_it_executes_git_and_returns_result(self):
         self.assertRegex(self.git.execute(["git", "version"]), r"^git version [\d\.]{2}.*$")
 
     def test_it_executes_git_not_from_cwd(self):