Rework landing page react quickly phrasing

Signed-off-by: Chris Cranford <chris@hibernate.org>

Author: Naros

_includes/features.html

@@ -66,10 +66,9 @@ <h2>Never miss a beat</h2>
   <div class="col-md-6 col-md-offset-2">
     <h2>React quickly</h2>
     <p>
-      When all things are running smoothly, Debezium is fast. And that means
-      your apps and services can react quickly. Debezium is built on top of
-      <a href="http://kafka.apache.org">Apache Kafka</a>, which is proven,
-      scalable, and handles very large volumes of data very quickly.
+      Debezium is built for low-latency, high throughput.
+      This means your apps and services can react quickly.
+      It is proven, scalable, and handles large volumes of data efficiently.
     </p>
   </div>
   <div class="col-md-2">