Update yamls

Signed-off-by: Tamal Saha <tamal@appscode.com>

docs/guides/ingress/configuration/loadbalance-algorithm.md

@@ -25,7 +25,7 @@ metadata:
   name: test-ingress
   namespace: demo
 spec:
-  backend:
+  defaultBackend:
     service:
       name: test-server
       port:

docs/guides/ingress/http/external-svc.md

@@ -59,7 +59,7 @@ metadata:
   name: test-ings-rhvulnlb
   namespace: default
 spec:
-  backend:
+  defaultBackend:
     service:
       name: external-ip
       port:
@@ -98,14 +98,14 @@ spec:
 
 If this service is used in ingress, the traffic will forward to google.com's address.
 
-```
+```yaml
 apiVersion: voyager.appscode.com/v1
 kind: Ingress
 metadata:
   name: test-ings-rhvulnlb
   namespace: default
 spec:
-  backend:
+  defaultBackend:
     service:
       name: external-ns
       port:
@@ -130,6 +130,7 @@ spec:
 #### Default redirect
 If No BackendRules are configured for the endpoint, Voyager will configure HAProxy to redirect traffic to provided domain and port.
 The redirect code will be 301 (permanent redirect). Scheme (http or https) used by endpoint is preserved on redirect.
+
 ```
 backend:
   service:
@@ -145,6 +146,7 @@ http-request redirect location http[s]://{{e.ExternalName}}:{{ e.Port }} code 30
 ```
 
 #### Backend Rule
+
 If Backendrules are configured, Voyager will not auto generate any redirect rule. This allows users to use full spectrum of HTTP redirection options available in HAProxy. To learn about these option, consult [HAProxy documentation](https://www.haproxy.com/doc/aloha/7.0/haproxy/http_redirection.html#redirection-examples).
 
 ```

docs/guides/ingress/http/http2.md

@@ -32,9 +32,7 @@ spec:
   tls:
   - hosts:
     - host.example.com
-    ref:
-      kind: Secret
-      name: tls-host
+    secretName: tls-host
   rules:
   - host: host.example.com
     http:

docs/guides/ingress/http/single-service.md

@@ -24,7 +24,7 @@ metadata:
   name: test-ingress
   namespace: default
 spec:
-  backend:
+  defaultBackend:
     service:
       name: test-service
       port:
@@ -45,7 +45,7 @@ metadata:
   name: test-ingress
   namespace: default
 spec:
-  backend:
+  defaultBackend:
     service:
       name: default-service
       port:

docs/guides/ingress/scaling.md

@@ -34,7 +34,7 @@ metadata:
   annotations:
     ingress.appscode.com/replicas: '2'
 spec:
-  backend:
+  defaultBackend:
     service:
       name: my-app
       port:

docs/guides/ingress/security/tls-auth.md

@@ -60,9 +60,7 @@ metadata:
   namespace: default
 spec:
   tls:
-  - ref:
-      kind: Secret
-      name: server
+  - secretName: server
     hosts:
     - auth.example.com
   rules:

docs/guides/ingress/tls/backend-tls.md

@@ -60,7 +60,7 @@ metadata:
   name: test-ingress
   namespace: default
 spec:
-  backend:
+  defaultBackend:
     service:
       name: test-service
       port: