fix: update fedi username

Author: Rexogamer

src/components/Footer.astro

@@ -13,7 +13,7 @@ const today = new Date();
 <footer>
     &copy; {today.getFullYear()} Sophie L
     <div class="social-links">
-        <a href="https://is.horse/@rexo" target="_blank">
+        <a href="https://st.transbus.social/@rexo" target="_blank">
             <span class="sr-only">Follow me on the Fediverse</span>
             <FirefishIcon />
         </a>

src/components/Header.astro

@@ -17,7 +17,7 @@ import { SITE_TITLE } from "../consts";
             <!-- NOT WRITTEN YET <HeaderLink href="/about">About</HeaderLink> -->
         </div>
         <div class="social-links">
-            <a href="https://is.horse/@rexo" target="_blank">
+            <a href="https://st.transbus.social/@rexo" rel="me" target="_blank">
                 <span class="sr-only">Follow me on the Fediverse</span>
                 <FirefishIcon />
             </a>