I need to add a favicon to our Community. I found an article (https://help.salesforce.com/articleView?id=000167021&type=1) which has the following steps:-

1. Create 16x16 icon. Add the favicon as an .ico format
2. Upload as a static resource and make sure cache control attribute is set as public
3. Go to Setup > Develop > Sites and click on Edit for your Site. / If you are logged into Community Management go to Administration > Pages > Go to Force.com > and click on the Edit button. In the Site Favorite Icon field upload the desired favicon.

I followed these steps but the favicon is not yet appearing.