doc: response-rewrite.md optimiazition (#1083)

doc/plugins/response-rewrite.md

@@ -31,7 +31,7 @@ response rewrite plugin, rewrite the content from upstream.
 
 **senario**:
 1. can set `Access-Control-Allow-*` series field to support CORS(Cross-origin Resource Sharing).
-2. we can set customized `status_code` and `Location` field in header to achieve redirect, you can alse use [redirect](redirect-cn.md) plugin if you just want a redirect function.function
+2. we can set customized `status_code` and `Location` field in header to achieve redirect, you can alse use [redirect](redirect-cn.md) plugin if you just want a redirection.
 
 ## Attributes
 |Name    |Requirement|Description|