Fix style.

dulwich/tests/test_repository.py

@@ -658,7 +658,7 @@ r = Repo('.')
 r.stage(['foo'])
 """ % {
             'executable': sys.executable,
-            'path': [os.path.join(os.path.dirname(__file__), '..', '..')] + sys.path }
+            'path': [os.path.join(os.path.dirname(__file__), '..', '..')] + sys.path}
 
         repo_dir = os.path.join(self.mkdtemp())
         self.addCleanup(shutil.rmtree, repo_dir)