Update log message to inform about incorrect CL for read repair (#1568)

Author: AnkitBarsainyaPSL

driver-core/src/main/java/com/datastax/driver/core/exceptions/ReadTimeoutException.java

@@ -42,7 +42,8 @@ public ReadTimeoutException(
     super(
         endPoint,
         String.format(
-            "Cassandra timeout during read query at consistency %s (%s)",
+            "Cassandra timeout during read query at consistency %s (%s). "
+                + "In case this was generated during read repair, the consistency level is not representative of the actual consistency.",
             consistency, formatDetails(received, required, dataPresent)),
         consistency,
         received,