Demos: Specify the dataType when loading the demo and docs files. Fixes #8069 - UI demos fail from local file:// in Firefox 9 - bad tags, bad calls in demo sources.

(cherry picked from commit ba43357)

Author: scottgonzalez

demos/index.html

@@ -220,9 +220,9 @@
 								return false;
 							});
 						});
-					});
+					}, "html" );
 				}
-			});
+			}, "html" );
 		}
 
 		function updateDemoNotes() {