Update README.md

Co-authored-by: Ximon Eighteen <[email protected]>

Author: Philip-NLnetLabs

README.md

@@ -10,7 +10,7 @@ For the first use case, the proxy can be configured to cache DNS replies and
 to perform local DNSSEC validation. The proxy can forward requests to the
 upstream with the lowest latency.
 
-For the section use case, the proxy can optionally cache or perform DNSSEC 
+For the second use case, the proxy can optionally cache or perform DNSSEC 
 validation. However, the expected main use case is as a load balancer in
 front of a collection of recursive resolvers. Query routing, based in the
 requested name can be used to route requests to different servers, for example,