Fix Typos found with misspell

git ls-files | grep -v locale | misspellings -f -

Change-Id: I0dc56ba64ae4bdc681ccf4a1d2d23238f541650d
diff --git a/docs/source/openrc.html b/docs/source/openrc.html
index b84d268..da6697f 100644
--- a/docs/source/openrc.html
+++ b/docs/source/openrc.html
@@ -60,7 +60,7 @@
           <dd>The introduction of Keystone to the OpenStack ecosystem has standardized the
             term <em>tenant</em> as the entity that owns resources.  In some places references
             still exist to the original Nova term <em>project</em> for this use.  Also,
-            <em>tenant_name</em> is prefered to <em>tenant_id</em>.
+            <em>tenant_name</em> is preferred to <em>tenant_id</em>.
             <pre>OS_TENANT_NAME=demo</pre></dd>
 
           <dt>OS_USERNAME</dt>