Add GVA endpoints

rfc/0003 RFC GraphQL API for Duniter Clients.md

@@ -364,5 +364,18 @@ So we don't need another database software dependency.
 
 The module will create another Sqlite3 file `gva_documents.db` to keep things well separated.
 
+### ENDPOINTS format
+
+The endpoints format is the same as the BMA api:
+
+The typical endpoint string is:
+
+    GVA [DNS] [IPv4] [IPv6] [PORT]
+
+The SSL endpoint string is:
+
+    GVAS [DNS] [IPv4] [IPv6] [PORT] [PATH]
+
+
 ---
 End of the document.