fix typo that prevented trimming watchdog logs

data/Dockerfiles/dovecot/trim_logs.sh

@@ -15,4 +15,4 @@ catch_non_zero "/usr/bin/redis-cli -h redis LTRIM NETFILTER_LOG 0 __LOG_LINES__"
 catch_non_zero "/usr/bin/redis-cli -h redis LTRIM AUTODISCOVER_LOG 0 __LOG_LINES__"
 catch_non_zero "/usr/bin/redis-cli -h redis LTRIM API_LOG 0 __LOG_LINES__"
 catch_non_zero "/usr/bin/redis-cli -h redis LTRIM RL_LOG 0 __LOG_LINES__"
-catch_non_zero "/usr/bin/redis-cli -h redis LTRIM WATCHDOGL_LOG 0 __LOG_LINES__"
+catch_non_zero "/usr/bin/redis-cli -h redis LTRIM WATCHDOG_LOG 0 __LOG_LINES__"