add missing title to error pages

src/App.tsx

@@ -59,6 +59,7 @@ export const App = () => (
     <Admin
       disableTelemetry
       requireAuth
+      title="Synapse Admin"
       layout={AdminLayout}
       loginPage={LoginPage}
       authProvider={authProvider}

src/utils/fetchMedia.ts

@@ -2,7 +2,7 @@ export const getServerAndMediaIdFromMxcUrl = (mxcUrl: string): { serverName: str
   const re = /^mxc:\/\/([^/]+)\/([\w-]+)$/;
   const ret = re.exec(mxcUrl);
   if (ret == null) {
-    return { serverName: "", mediaId: ""  };
+    return { serverName: "", mediaId: "" };
   }
   const serverName = ret[1];
   const mediaId = ret[2];