Fix typo errors in devstack documentation
This submission fixes typo errors in following files
1. contributing.rst
2. exerciserc.rst
3. faq.rst
4. local.conf.rst
5. openrc.rst
Change-Id: I2b2d61673c3c95f60c56978b5a81016603fef252
diff --git a/doc/source/local.conf.rst b/doc/source/local.conf.rst
index b2f7557..a1ca60a 100644
--- a/doc/source/local.conf.rst
+++ b/doc/source/local.conf.rst
@@ -2,7 +2,7 @@
local.conf - User Settings
==========================
-``local.conf`` is a user-maintained setings file that is sourced in
+``local.conf`` is a user-maintained settings file that is sourced in
``stackrc``. It contains a section that replaces the historical
``localrc`` file. See the description of
:doc:`local.conf <configuration>` for more details about the mechanics