Import semicolon bug

### Bug Description

When a import statement in JavaScript or CoffeeScript ends with a semicolon like:
```// @codekit-prepend "Core/VMM.StoryJS.js";```
Prepros fails to remove it, thus ends up with a faulty file path and throw an error message:

>Imported file "file/path/that/is/correct.js;" not found 
 Imported by "whatever.js" 

### Fix

Change the regex to remove semicolon.