docs: Update Redis Operator README and Sentinel documentation (#1439)

Signed-off-by: yangw <[email protected]>

Author: drivebyer

charts/redis-operator/README.md

@@ -113,6 +113,8 @@ kubectl create secret tls <webhook-server-cert> --key tls.key --cert tls.crt -n
 | redisOperator.imagePullPolicy | string | `"Always"` |  |
 | redisOperator.imagePullSecrets | list | `[]` |  |
 | redisOperator.imageTag | string | `""` |  |
+| redisOperator.metrics.bindAddress | string | `":8080"` |  |
+| redisOperator.metrics.enabled | bool | `true` |  |
 | redisOperator.name | string | `"redis-operator"` |  |
 | redisOperator.podAnnotations | object | `{}` |  |
 | redisOperator.podLabels | object | `{}` |  |

docs/content/en/docs/Getting Started/Sentinel/_index.md

@@ -1,6 +1,6 @@
 ---
 title: "Sentinel"
-linkTitle: "sentinel"
+linkTitle: "Sentinel"
 weight: 20
 date: 2023-04-05T19:00:00Z
 description: >
@@ -17,7 +17,7 @@ Redis Sentinel is a tool that provides automatic failover and monitoring for Red
 
 ## Helm Installation
 
-In redis sentinel mode, we deploy redis as a single StatefulSet pod that means ease of setup but no complexity, no high availability, and no resilience.
+In redis sentinel mode, we deploy redis sentinel as a highly available monitoring solution that provides automatic failover, monitoring, and configuration management for Redis instances.
 
 Installation can be easily done via `helm` command: