feat: open footer links in a new tab for improved accessibility

Author: Lemon73-Computing

layouts/partials/footer.html

@@ -1,6 +1,6 @@
 <p>
-    © Copyright licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">CC BY-SA 4.0</a>.
+    © Copyright licensed under the <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">CC BY-SA 4.0</a>.
     {{ if .GitInfo }}
-    Revision <a href="https://github.com/Lemon73-Computing/lemon73-computing.github.io/commit/{{ .GitInfo.Hash }}">{{ .GitInfo.AbbreviatedHash }}</a>.
+    Revision <a href="https://github.com/Lemon73-Computing/lemon73-computing.github.io/commit/{{ .GitInfo.Hash }}" target="_blank">{{ .GitInfo.AbbreviatedHash }}</a>.
     {{ end }}
 </p>