docs: update operator deployment

docs/monitoring/loadbalanging.md

@@ -0,0 +1,39 @@
+---
+title: Load Balancing
+layout: default
+parent: Monitoring and Performance
+nav_order: 3
+---
+
+
+# Load Balancing
+
+Goma Gateway supports round-robin algorithm load balancing.
+
+It comes with an integrated load balancing backends healthcheck.
+
+```yaml
+version: 1.0
+gateway:
+    routes:
+        - path: /
+          name: example route
+          hosts:
+            - example.com
+            - example.localhost
+          rewrite: /
+          methods: []
+          healthCheck:
+            path: "/"
+            interval: 30s
+            timeout: 10s
+            healthyStatuses: [200,404]
+          ## destination: will be override by backends
+          destination: ""
+          backends:
+            - https://example.com
+            - https://example2.com
+            - https://example4.com
+          cors:
+```
+