Fix broken US English.

Author: nvie

src/ngResource/resource.js

@@ -76,7 +76,7 @@ function shallowClearAndCopy(src, dst) {
  *
  * By default, trailing slashes will be stripped from the calculated URLs,
  * which can pose problems with server backends that do not expect that
- * behaviour.  This can be disabled by configuring the `$resourceProvider` like
+ * behavior.  This can be disabled by configuring the `$resourceProvider` like
  * this:
  *
  * <pre>
@@ -428,7 +428,7 @@ angular.module('ngResource', ['ng']).
             }
           });
 
-          // strip trailing slashes and set the url (unless this behaviour is specifically disabled)
+          // strip trailing slashes and set the url (unless this behavior is specifically disabled)
           if (self.defaults.stripTrailingSlashes) {
             url = url.replace(/\/+$/, '');
           }

test/ngResource/resourceSpec.js

@@ -183,7 +183,7 @@ describe("resource", function() {
 
 
   it('should not strip the trailing slashes from URLs if configured', function() {
-    // Set the new behaviour for all new resources created by overriding the
+    // Set the new behavior for all new resources created by overriding the
     // provider configuration
     resourceProvider.defaults.stripTrailingSlashes = false;