Fix typo spotted by @nsoranzo.

jmchilton · jmchilton · commit 9ae35cb64a57 · 2016-10-05T09:17:28.000-04:00
diff --git a/tox.ini b/tox.ini
@@ -7,7 +7,7 @@ commands = bash .ci/flake8_wrapper.sh
 whitelist_externals = bash
 deps =
     flake8
-    flake8_docstrings==1.0.2
+    flake8-docstrings==1.0.2
 
 [testenv:py33-lint]
 commands = bash .ci/flake8_py3_wrapper.sh
