Update README.md

Author: critt

README.md

@@ -10,4 +10,4 @@ A native Android client for a sockets/gRPC/GCP bidirectional translation system.
 
 ### Prerequisites
 - This [python app](https://github.com/critt/Interp-Service) running somewhere, which serves as the backend for this app. It provides a REST interface for feature enumeration and authentication, and WebSockets channels for realtime audio transcription and translation
-  - Once you have the backend running, update the file `paths.properties` in this project with the its's URL and rebuild
+  - Once you have the backend running, update the file `paths.properties` in this project with its's URL and rebuild