[contributing][code] Fixed minor typo

Author: dustinwhittle

contributing/code/bugs.rst

@@ -14,7 +14,7 @@ Before submitting a bug:
  * Double-check the official `documentation`_ to see if you're not misusing the
  framework;
 
- * Ask assistance on the `users mailing-list`_, the `forum`_, or on the
+ * Ask for assistance on the `users mailing-list`_, the `forum`_, or on the
  #symfony `IRC channel`_ if you're not sure if your issue is really a bug.
 
 If your problem definitely looks like a bug, report it using the official bug
@@ -23,7 +23,7 @@ If your problem definitely looks like a bug, report it using the official bug
  * Use the title field to clearly describe the issue;
 
  * Describe the steps needed to reproduce the bug with short code examples
- (providing a unit test that illustrates the bug is better);
+ (providing a unit test that illustrates the bug is best);
 
  * Give as much details as possible about your environment (OS, PHP version,
  Symfony version, enabled extensions, ...);