Normalize encoding name to upper case

Author: garydgregory

pom.xml

@@ -147,7 +147,7 @@
     <commons.site.path>lang</commons.site.path>
     <commons.scmPubUrl>https://svn.apache.org/repos/infra/websites/production/commons/content/proper/commons-lang</commons.scmPubUrl>
     <commons.scmPubCheckoutDirectory>site-content</commons.scmPubCheckoutDirectory>
-    <commons.encoding>utf-8</commons.encoding>
+    <commons.encoding>UTF-8</commons.encoding>
 
     <checkstyle.configdir>src/site/resources/checkstyle</checkstyle.configdir>