Update README.md

Author: Maiklins

spring-reactive-modules/spring-reactive-client-2/README.md

@@ -8,4 +8,5 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 ### Relevant Articles
 - [Limiting the Requests per Second With WebClient](https://www.baeldung.com/spring-webclient-limit-requests-per-second)
 - [Stream Large Byte[] to File With WebClient](https://www.baeldung.com/webclient-stream-large-byte-array-to-file)
+- [Spring WebClient exchange() vs retrieve()](https://www.baeldung.com/spring-webclient-exchange-vs-retrieve)
 - More articles: [[<-- prev]](../spring-reactive-client)