fix(docs): correctly generate filenames for plunkr/fiddle

previously examples like $http where broken because we would strip part of the
filename (http-hello.html -> http)

we really want to strip only the id suffix that we append to disambiguate
common filenames (like index.html) which appear in many examples.

docs/src/templates/js/docs.js

@@ -63,7 +63,8 @@ docsApp.directive.sourceEdit = function(getEmbeddedTemplate) {
   function read(text) {
     var files = [];
     angular.forEach(text ? text.split(' ') : [], function(refId) {
-      files.push({name: refId.split('-')[0], content: getEmbeddedTemplate(refId)});
+      // refId is index.html-343, so we need to strip the unique ID when exporting the name
+      files.push({name: refId.replace(/-\d+$/, ''), content: getEmbeddedTemplate(refId)});
     });
     return files;
   }