Docs: fix duplicate values in INSTALLATION.md

Author: andrew-opensignlabs

INSTALLATION.md

@@ -98,8 +98,7 @@ Environment Varaibles:
 | PUBLIC_URL  | http://localhost:3000  | Set it to the URL form where the app home page will be accessed |
 | GENERATE_SOURCEMAP  | false | Set it to true if you want to generate the Sourcemap for debugging |
 | REACT_APP_SERVERURL  | http://localhost:8080/app  | Set it to the URL from where APIs will be accessible, for local development it should be localhost:3000/api/app (use your local port number instead) |
-| REACT_APP_APPID  | http://localhost:3000  | Set it to the URL form where the app home page will be accessed |
-| PUBLIC_URL  | opensignstgn  | A 12 character long random app identifier. The value of this should be same as APP_ID which is a variable used by backend API. |
+| REACT_APP_APPID  | opensignstgn  | A 12 character long random app identifier. The value of this should be same as APP_ID which is a variable used by backend API. |
 | APP_ID  | opensignstgn  | A 12 character long random app identifier. The value of this should be same as REACT_APP_APPID which is a variable used by Frontend React App. |
 | appName  | open_sign_server  | Name of the app. It will be visible in the verification emails sent out. |
 | MASTER_KEY  | XnAadwKxxByMr  | A 12 character long random secret key that allows access to all the data. It is used in Parse dashboard config to view all the data in the database. |