Showcase selectBooleanButton typo corrected

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@10903 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Issue 6234: Showcase DF component typo corrected

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@10904 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c