fix(doc) correct inaccurate header (Kong#946)

Aboisier · web-flow · commit 99486c76b547 · 2020-11-04T12:56:53.000-08:00
diff --git a/docs/guides/using-kongclusterplugin-resource.md b/docs/guides/using-kongclusterplugin-resource.md
@@ -1,4 +1,4 @@
-# Using KongPlugin resource
+# Using KongClusterPlugin resource
 
 In this guide, we will learn how to use KongClusterPlugin resource to configure
 plugins in Kong.

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# Using KongPlugin resource`
	`1`	`+# Using KongClusterPlugin resource`
`2`	`2`
`3`	`3`	`In this guide, we will learn how to use KongClusterPlugin resource to configure`
`4`	`4`	`plugins in Kong.`