Fix typos

This was found by running an IntellijIDE
code inspection for proofreading.

spec/data.js

@@ -217,7 +217,7 @@ describe('data', function() {
       })
       .withInput({ exclaim: true, zomg: 'planet' })
       .withRuntimeOptions({ data: { adjective: 'happy' } })
-      .withMessage('Overriden data output by helper')
+      .withMessage('Overridden data output by helper')
       .toCompileTo('sad world?');
   });
 
@@ -232,7 +232,7 @@ describe('data', function() {
       })
       .withInput({ exclaim: true, zomg: 'world' })
       .withRuntimeOptions({ data: { adjective: 'happy' } })
-      .withMessage('Overriden data output by helper')
+      .withMessage('Overridden data output by helper')
       .toCompileTo('sad world?');
   });
 

spec/utils.js

@@ -22,7 +22,7 @@ describe('utils', function() {
   });
 
   describe('#escapeExpression', function() {
-    it('shouhld escape html', function() {
+    it('should escape html', function() {
       equals(
         Handlebars.Utils.escapeExpression('foo<&"\'>'),
         'foo&lt;&amp;&quot;&#x27;&gt;'

spec/vendor/require.js

@@ -1488,7 +1488,7 @@ var requirejs, require, define;
             /**
              * Called to enable a module if it is still in the registry
              * awaiting enablement. A second arg, parent, the parent module,
-             * is passed in for context, when this method is overriden by
+             * is passed in for context, when this method is overridden by
              * the optimizer. Not shown here to keep code compact.
              */
             enable: function (depMap) {