Merge pull request #44676 from Arhell/zh-typo

[zh] Fix typo & link

Author: k8s-ci-robot

content/zh-cn/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions.md

@@ -624,7 +624,7 @@ would be sent to the API server.
 #### Controlling pruning
 
 By default, all unspecified fields for a custom resource, across all versions, are pruned. It is possible though to
-opt-out of that for specifc sub-trees of fields by adding `x-kubernetes-preserve-unknown-fields: true` in the
+opt-out of that for specific sub-trees of fields by adding `x-kubernetes-preserve-unknown-fields: true` in the
 [structural OpenAPI v3 validation schema](#specifying-a-structural-schema).
 
 For example:
@@ -1942,7 +1942,7 @@ CEL [`Optional`](https://pkg.go.dev/github.com/google/cel-go/cel#OptionalTypes)
 
 <!--
 `optionalOldSelf` is useful in cases where schema authors would like a more
-control tool [than provided by the default equality based behavior of ][#validation-ratcheting] 
+control tool [than provided by the default equality based behavior of](#validation-ratcheting) 
 to introduce newer, usually stricter constraints on new values, while still 
 allowing old values to be "grandfathered" or ratcheted using the older validation.