HDFS-16122. Fix DistCpContext#toString() (#3191). Contributed by tomscut.

Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>

hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpContext.java

@@ -204,7 +204,7 @@ public class DistCpContext {
     return options.toString() +
         ", sourcePaths=" + sourcePaths +
         ", targetPathExists=" + targetPathExists +
-        ", preserveRawXattrs" + preserveRawXattrs;
+        ", preserveRawXattrs=" + preserveRawXattrs;
   }
 
 }