chore: update documentation example

Co-authored-by: Trask Stalnaker <[email protected]>

Author: elbiocaetano

instrumentation/apache-httpclient/apache-httpclient-5.2/library/README.md

@@ -48,7 +48,7 @@ public class ApacheHttpClient5Configuration {
   }
 
   // creates a new http client builder for constructing http clients with open telemetry instrumentation
-  protected HttpClientBuilder createBuilder() {
+  public HttpClientBuilder createBuilder() {
     return ApacheHttpClient5Telemetry.builder(openTelemetry).build().newHttpClientBuilder();
   }