attribute readmes to peerprep userservice repo

Author: feliciagan

backend/question-service/README.md

@@ -1,5 +1,7 @@
 # Question Service
 
+> This guide references the [user-service README in the PeerPrep-UserService repository](https://github.com/CS3219-AY2425S1/PeerPrep-UserService/blob/main/user-service/README.md)
+
 ## Setting-up MongoDB
 
 > :notebook: If you are familiar to MongoDB and wish to use a local instance, please feel free to do so. This guide utilizes MongoDB Cloud Services.

backend/user-service/MongoDBSetup.md

@@ -1,3 +1,5 @@
+> This guide is taken from the [user-service MongoDBSetup.md in the PeerPrep-UserService repository](https://github.com/CS3219-AY2425S1/cs3219-ay2425s1-project-g28/blob/main/backend/user-service/MongoDBSetup.md)
+
 # Setting up MongoDB Instance
 
 1. Visit the MongoDB Atlas Site [https://www.mongodb.com/atlas](https://www.mongodb.com/atlas) and click on "Try Free"

backend/user-service/README.md

@@ -1,5 +1,9 @@
 # User Service Guide
 
+> User Service was adapted from [PeerPrep-UserService repository](https://github.com/CS3219-AY2425S1/PeerPrep-UserService)
+
+> This guide references the [user-service README in the PeerPrep-UserService repository](https://github.com/CS3219-AY2425S1/PeerPrep-UserService/blob/main/user-service/README.md)
+
 ## Setting-up MongoDB
 
 > :notebook: If you are familiar to MongoDB and wish to use a local instance, please feel free to do so. This guide utilizes MongoDB Cloud Services.