fix(header): correct case in GitHub link title

Signed-off-by: Christoph Heiss <[email protected]>

Author: christoph-heiss

src/components/Header.astro

@@ -24,7 +24,7 @@ const translation = useTranslations(lang);
 				<li><a href="https://aux.computer/contribute">Contribute</a></li>
 			-->
 				<li><a href="https://forum.aux.computer">{translation("header.community")}</a></li>
-				<li><a href="https://github.com/auxolotl">Github</a></li>
+				<li><a href="https://github.com/auxolotl">GitHub</a></li>
 			</ul>
 		</nav>
 	</div>