Fix grammar.

Author: jsyrjala

src/ngResource/resource.js

@@ -19,9 +19,9 @@
  * the need to interact with the low level {@link ng.$http $http} service.
  *
  * @param {string} url A parameterized URL template with parameters prefixed by `:` as in
- *   `/user/:username`. If you are using URL with a port number (e.g. `http://example.com:8080/api`),
- *   you'll need to escape colon character before the port number, like this: 
- *   `$resource('http://example.com\\:8080/api')`.
+ *   `/user/:username`. If you are using a URL with a port number (e.g. 
+ *   `http://example.com:8080/api`), you'll need to escape the colon character before the port
+ *   number, like this: `$resource('http://example.com\\:8080/api')`.
  *
  * @param {Object=} paramDefaults Default values for `url` parameters. These can be overridden in
  *   `actions` methods. If any of the parameter value is a function, it will be executed every time