Shorten link for nicer indentation

setuptools/command/easy_install.py

@@ -1817,7 +1817,7 @@ def _update_zipimporter_cache(normalized_path, cache, updater=None):
         #    get/del patterns instead. For more detailed information see the
         #    following links:
         #      https://github.com/pypa/setuptools/issues/202#issuecomment-202913420
-        #      https://bitbucket.org/pypy/pypy/src/dd07756a34a41f674c0cacfbc8ae1d4cc9ea2ae4/pypy/module/zipimport/interp_zipimport.py#cl-99
+        #      http://bit.ly/2h9itJX
         old_entry = cache[p]
         del cache[p]
         new_entry = updater and updater(p, old_entry)