Replace Mastodon social link with Bluesky

Author: asatarin

Diff for: _includes/footer.html

@@ -1,3 +1,5 @@
-<p>Follow me on Twitter <a href="https://twitter.com/asatarin">@asatarin</a>,
-Mastodon <a rel="me" href="https://discuss.systems/@asatarin">https://discuss.systems/@asatarin</a>
-or <a href="/follow/">other platforms</a>.</p>
+<p>
+    Follow me on Twitter <a href="https://twitter.com/asatarin">@asatarin</a>,
+    Bluesky <a href="https://bsky.app/profile/asatarin.bsky.social">@asatarin.bsky.social</a>
+    or <a href="/follow/">other platforms</a>.
+</p>