edit:module:auth:*logout | add single line documentation for logout module

src/modules/auth/services/logout.service.ts

@@ -4,11 +4,15 @@ import { deleteUserSessionInCacheAndDBService } from "../../userSession/services
 
 export const logoutService = async (userCookie: string) => {
   try {
+    // Decode the JWT token to get the user session
     const jwtToken = jwtDecode(userCookie);
+
+    // Delete the user session from cache and database
     const deleteUserSessionInCacheAndDB =
       deleteUserSessionInCacheAndDBService(jwtToken);
-
     return deleteUserSessionInCacheAndDB;
+
+    // If the session was not found in the cache or database, throw an error
   } catch (error) {
     ErrorForwarder(error, 500, "Logout service had encountered error");
   }