docs: update footer label

Signed-off-by: Adam Setch <[email protected]>

src/components/Footer.astro

@@ -15,7 +15,7 @@ const isHomepage = currentPathname === '/';
       target="_blank"
       rel="noopener noreferrer"
       href="https://github.com/gitify-app/gitify/"
-      aria-label="GitHub"
+      aria-label="GitHub Repository"
       class="mt-1 mb-4 mx-2 p-1 text-white hover:text-gray-400"
     >
       <GithubIcon className="w-6" />