Fix for whitespace before comment block

Fixes a bug when comment block has whitespace before it which causes a crash
e.g.

```
/**
 * @apiDefinePermission admin This title is visible in version 0.1.0 and 0.2.0
 * @apiVersion 0.1.0
 */

    /**
     * @api {get} /user/:id Read data of a User
     * @apiVersion 0.3.0
     * @apiName GetUser
     * @apiGroup User
     */
```