create_release.sh: corrections to the script.

tools/create-release.sh

@@ -54,9 +54,9 @@ cat << EOF >> release.json
 }
 EOF
 
-cat '=================================================='
+echo '=================================================='
 cat release.json
-cat '=================================================='
+echo '=================================================='
 
 curl --silent --fail --write-out "%{http_code}\n"\
      --header "PRIVATE-TOKEN: $PRIVATE_TOKEN" \