Update SampleConflictFeedAsync.java

add tags to read conflict feed section to add to public docs

Author: TheovanKraay

src/main/java/com/azure/cosmos/examples/conflictfeed/async/SampleConflictFeedAsync.java

@@ -306,6 +306,7 @@ private void conflictFeedHandler() {
 
         // --------------------
 
+        // <ReadConflictFeed>
         int requestPageSize = 3;
         CosmosQueryRequestOptions options = new CosmosQueryRequestOptions();
 
@@ -327,6 +328,7 @@ private void conflictFeedHandler() {
                 // response.
             }
         });
+        // </ReadConflictFeed>
     }
 
     private void shutdown() {