Fix a self link to Customizing Your Pods.

Author: RenxuanW

docs/user_manual.md

@@ -50,7 +50,7 @@ For more information on version compatibility, see our [compatibility guide](doc
 
 ## Before You Create a Cluster
 
-This operator aims to support as many different environments and use cases as we can, by offering a variety of customization options. You may find that the stock configurations don't work as desired in your environment. We recommend reading through this entire manual in order to get a feel for how the operator works. There are a few sections that are most likely to be relevant before you create a cluster: [Customizing Your Pods](#customizing-a-container), [Controlling Fault Domains](#controlling-fault-domains), and [Using Multiple Namespaces](#using-multiple-namespaces).
+This operator aims to support as many different environments and use cases as we can, by offering a variety of customization options. You may find that the stock configurations don't work as desired in your environment. We recommend reading through this entire manual in order to get a feel for how the operator works. There are a few sections that are most likely to be relevant before you create a cluster: [Customizing Your Pods](#customizing-your-pods), [Controlling Fault Domains](#controlling-fault-domains), and [Using Multiple Namespaces](#using-multiple-namespaces).
 
 # Creating a Cluster