Fix missing comma in maintainers list

library/redis

@@ -2,7 +2,7 @@ Maintainers: Adam Ben Shmuel <[email protected]> (@adamiBs),
              Yossi Gottlieb <[email protected]> (@yossigo),
              Alexander Dobrzhansky <[email protected]> (@adobrzhansky),
              Max Berkman <[email protected]> (@maxb-io),
-             Dagan Sandler <[email protected]> (@dagansandler)
+             Dagan Sandler <[email protected]> (@dagansandler),
              Petar Shtuchkin <[email protected]> (@Peter-Sh)
 GitRepo: https://github.com/redis/docker-library-redis.git