Update SparkyFitnessFrontend/src/api/Auth/auth.ts

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: Sim-sat

SparkyFitnessFrontend/src/api/Auth/auth.ts

@@ -98,7 +98,7 @@ export const loginUser = async (
 
   if (!authData?.user) {
     throw new Error(
-      'Registration succeeded but no user data was received from the server.'
+      'Login succeeded but no user data was received from the server.'
     );
   }