Error: Please use $(ref:runtime.getURL).

Hi Utkarsh,

Thank you for Lovely Forks.
In Firefox Browser Console (Ctrl+Shift+J) it shows:
```
Error: Please use $(ref:runtime.getURL). 2 contentscript.js:45
    createIconSVG moz-extension://6582eb11-633d-476d-a596-8ad0b3607e84/webext/data/contentscript.js:45
```