Change "fa" to "fas" for Font Awesome 5 (mmistakes#2649)

* main.js: fa -> fas for FA 5

* Update CHANGELOG and history

Author: iBug

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### Bug Fixes
 
 - Fix `entries_layout: grid` in various layouts. [#2639](https://github.com/mmistakes/minimal-mistakes/issues/2639)
+- Change `fa` to `fas` for Font Awesome 5. [#2649](https://github.com/mmistakes/minimal-mistakes/pull/2649)
 
 ## [4.20.1](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.20.1)
 

assets/js/_main.js

@@ -128,7 +128,7 @@ $(document).ready(function() {
       var anchor = document.createElement("a");
       anchor.className = 'header-link';
       anchor.href = '#' + id;
-      anchor.innerHTML = '<span class=\"sr-only\">Permalink</span><i class=\"fa fa-link\"></i>';
+      anchor.innerHTML = '<span class=\"sr-only\">Permalink</span><i class=\"fas fa-link\"></i>';
       anchor.title = "Permalink";
       $(this).append(anchor);
     }

assets/js/main.min.js

@@ -12,6 +12,7 @@ toc: false
 ## Unreleased
 
 - Fix `entries_layout: grid` in various layouts. [#2639](https://github.com/mmistakes/minimal-mistakes/issues/2639)
+- Change `fa` to `fas` for Font Awesome 5. [#2649](https://github.com/mmistakes/minimal-mistakes/pull/2649)
 
 ## [4.20.1](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.20.1)