Fix shocco errors and warnings

A few Markdown-oriented issues were causing Docutils errors to
leak into the end-user docs on http://devstack.org

Change-Id: I51fa9698afb1bfb48596478d83bd1fdcd84ac52e
diff --git a/exercises/swift.sh b/exercises/swift.sh
index b9f1b56..25ea671 100755
--- a/exercises/swift.sh
+++ b/exercises/swift.sh
@@ -2,7 +2,7 @@
 
 # **swift.sh**
 
-# Test swift via the ``swift`` command line from ``python-swiftclient`
+# Test swift via the ``swift`` command line from ``python-swiftclient``
 
 echo "*********************************************************************"
 echo "Begin DevStack Exercise: $0"