Merge pull request #38941 from lonelyCZ/pr-fix-index

[zh] Fix index misspelling of custom-resource-definitions.md

Author: k8s-ci-robot

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

@@ -1930,7 +1930,7 @@ Avoid nested lists and maps if possible where validation rules are used.
 <!--
 ### Defaulting
 -->
-### 设置默认值   {#efaulting}
+### 设置默认值   {#defaulting}
 
 {{< note >}}
 <!--