docs: update configuration deployment

examples/goma.yml

@@ -16,6 +16,10 @@ gateway:
   logLevel: info # debug, trace, off
   accessLog:    "/dev/Stdout"
   errorLog:     "/dev/stderr"
+  ## Redis connexion for distributed rate limiting, when using multiple instances | It's optional
+  #redis:
+    #addr: redis:6379
+   # password: password
   ## Enable, disable routes health check
   disableHealthCheckStatus: false
   ## Returns backend route healthcheck errors