Removed spaces that was messing with the Kafka properties for the 'Apache Kafka with Reactive Streams' section

Author: eldermoraes

documentation/modules/ROOT/pages/15_kafka-and-streams.adoc

@@ -51,8 +51,8 @@ Add the following properties to your `application.properties` in `src/main/resou
 [.console-input]
 [source,properties]
 ----
-mp.messaging.outgoing.messages.connector=smallrye-kafka // <1>
-mp.messaging.outgoing.messages.topic=pricedbeers // <2>
+mp.messaging.outgoing.messages.connector=smallrye-kafka// <1>
+mp.messaging.outgoing.messages.topic=pricedbeers// <2>
 ----
 <1> `messages` channel is backed to Kafka
 <2> `messages` channel sends events to `pricedbeers` topic