Fix doc typo

Change-Id: If5eeae9eb87c849272d6dd316e2c174cc9169ef2
diff --git a/doc/source/user/config.rst b/doc/source/user/config.rst
index 94f7a14..2fc372c 100644
--- a/doc/source/user/config.rst
+++ b/doc/source/user/config.rst
@@ -1338,7 +1338,7 @@
       stable maintenance branches with dissimilar names, but both
       should use the same job variants, this directive may be used to
       indicate that all of the jobs defined in the stable branch of
-      the first project may also be used for the stable branch of teh
+      the first project may also be used for the stable branch of the
       other.  For example:
 
       .. code-block:: yaml