Merge pull request #325 from lord63-forks/fix-typo

Fix typo in docs/index.txt
diff --git a/docs/index.txt b/docs/index.txt
index 7515fe3..cbdc7a4 100644
--- a/docs/index.txt
+++ b/docs/index.txt
@@ -123,7 +123,7 @@
 
 mock is CI tested using Travis-CI on Python versions 2.6, 2.7, 3.2, 3.3, 3.4,
 3.5, nightly Python 3 builds, pypy, pypy3. Jython support is desired, if
-someone could contribute a patch to .travis.jml to support it that would be
+someone could contribute a patch to .travis.yml to support it that would be
 excellent.
 
 Releasing