tox: Always recreate docs

The reno extension doesn't seem to trigger an environment rebuild. Force
this.

Signed-off-by: Stephen Finucane <stephen@that.guru>

diff --git a/tox.ini b/tox.ini
index 3da222c20ef49480e0a0e1279ed891bad201a28a..90f177a88a04359be9455f1230a0e06e18407570 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -51,7 +51,7 @@ exclude = ./patchwork/migrations
 deps =
     -r{toxinidir}/docs/requirements.txt
 commands =
-    sphinx-build -W -b html docs docs/_build/html
+    sphinx-build -E -W -b html docs docs/_build/html
 
 [testenv:lint]
 basepython = python2.7