doc: update incorrect description of dump.maxSize (#4982)

Author: samuel871211

docs/docs/api/Dispatcher.md

@@ -1031,7 +1031,7 @@ const client = new Client("http://service.example").compose(
 The `dump` interceptor enables you to dump the response body from a request upon a given limit.
 
 **Options**
-- `maxSize` - The maximum size (in bytes) of the response body to dump. If the size of the request's body exceeds this value then the connection will be closed. Default: `1048576`.
+- `maxSize` - The maximum size (in bytes) of the response body to dump. If the size of the response's body exceeds this value then the connection will be closed. Default: `1048576`.
 
 > The `Dispatcher#options` also gets extended with the options `dumpMaxSize`, `abortOnDumped`, and `waitForTrailers` which can be used to configure the interceptor at a request-per-request basis.