Added missing icons

I never added font awesome fonts and I didn't notice because I use nerd
fonts on my own computer :/

themes/alejandro-angulo/assets/css/main.css

@@ -7,6 +7,10 @@ body {
   font-family: Hack, monospace;
 }
 
+.fab {
+  font-size: 20px;
+}
+
 a {
   color: #00a7af;
   padding: 0.1em;

themes/alejandro-angulo/layouts/_default/single.html

@@ -5,7 +5,7 @@
     class="glyph-link"
     href="{{ $.Param "githubURL" }}/commits/{{ $.Param "gitBranch" }}/content/{{ .File.Dir }}/{{ .File.LogicalName }}"
   >
-    View post history <i class="nf nf-fa-github_alt"></i>
+    View post history <i class="fab fa-github-alt"></i>
   </a>
   {{ .Content }}
 {{ end }}

themes/alejandro-angulo/layouts/partials/head.html

@@ -6,6 +6,13 @@
     type="text/css"
     href="https://cdn.jsdelivr.net/npm/hack-font@3/build/web/hack.css"
   />
+  <link
+    rel="stylesheet"
+    href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.2/css/brands.css"
+    integrity="sha512-/0+jCMeks7Sm7B2Jai6K8JDYQqiwWiY73tw+G6BQkisKhUC0fqKt9Sd8noZvHPHl5rm9/cJ5hcuzzONlFvLMQQ=="
+    crossorigin="anonymous"
+    referrerpolicy="no-referrer"
+  />
   {{ $main_style := resources.Get "css/main.css" | minify }}
   {{ $highlight_style := resources.Get "css/highlight.css" | minify }}
   {{ $nerdfont_style := resources.Get "css/nerd-fonts-generated.css" | minify }}