Modify endpoint with explicit subscriptions path

rfc/0003 RFC GraphQL API for Duniter Clients.md

@@ -366,15 +366,11 @@ The GraphQL API is added on the server as a Duniter module.
 
 ### ENDPOINTS format
 
-The endpoints format is the same as the BMA api:
+The endpoint format needs one path for the HTTP requests (queries and mutations) and one path for the websocket channel (subscriptions).
 
 The typical endpoint string is:
 
-    GVA [DNS] [IPv4] [IPv6] [PORT]
-
-The SSL endpoint string is:
-
-    GVAS [DNS] [IPv4] [IPv6] [PORT] [PATH]
+    GVA|GVAS [DNS | IPv4 | IPv6] [PORT] [PATH] [SUBSCRIPTIONS_PATH]
 
 ## API GraphQL Schema