Fix gerrit label capitalization in docs

Missed these in a rebase.

And fix a typo.

Change-Id: I359fdb42cfbee9ffb5b5377c5176675dcbde5f16
diff --git a/doc/source/admin/drivers/gerrit.rst b/doc/source/admin/drivers/gerrit.rst
index e46bb63..296e47f 100644
--- a/doc/source/admin/drivers/gerrit.rst
+++ b/doc/source/admin/drivers/gerrit.rst
@@ -105,7 +105,7 @@
 **approval**
   This is only used for ``comment-added`` events.  It only matches if
   the event has a matching approval associated with it.  Example:
-  ``code-review: 2`` matches a ``+2`` vote on the code review
+  ``Code-Review: 2`` matches a ``+2`` vote on the code review
   category.  Multiple approvals may be listed.
 
 **email**
@@ -179,14 +179,14 @@
 items meet certain conditions in order to be enqueued into the
 pipeline.  These conditions vary according to the source of the
 project in question.  To supply requirements for changes from a Gerrit
-source named *my-gerrit*, create a congfiguration such as the
+source named *my-gerrit*, create a configuration such as the
 following::
 
   pipeline:
     require:
       my-gerrit:
         approval:
-          - code-review: 2
+          - Code-Review: 2
 
 This indicates that changes originating from the Gerrit connection
 named *my-gerrit* must have a Code Review vote of +2 in order to be
@@ -268,4 +268,4 @@
         reject:
           my-gerrit:
             approval:
-              - code-review: [-1, -2]
+              - Code-Review: [-1, -2]