Update docs reference

docs/development.rst

@@ -69,7 +69,7 @@ Running tests
 OS Requirements: subversion, bazaar, git, and mercurial.
 
 Python Requirements: tox or install all packages listed in
-`dev-requirements.txt`_
+`test-requirements.txt`_
 
 Ways to run the tests locally::
 
@@ -262,4 +262,4 @@ to create one of these the changes should already be merged into the
 .. _`.travis.yml`: https://github.com/pypa/pip/blob/master/.travis.yml
 .. _`appveyor.yml`: https://github.com/pypa/pip/blob/master/appveyor.yml
 .. _`Travis CI Pull Requests`: https://travis-ci.org/pypa/pip/pull_requests
-.. _`dev-requirements.txt`: https://github.com/pypa/pip/blob/master/dev-requirements.txt
+.. _`test-requirements.txt`: https://github.com/pypa/pip/blob/master/tools/test-requirements.txt