Update env-example

Author: bestlong

env-example

@@ -232,6 +232,7 @@ NGINX_SSL_PATH=./nginx/ssl/
 
 LARAVEL_HORIZON_INSTALL_SOCKETS=false
 LARAVEL_HORIZON_INSTALL_PHPREDIS=true
+LARAVEL_HORIZON_INSTALL_MONGO=false
 
 ### APACHE ################################################
 
@@ -822,4 +823,4 @@ GEARMAN_MYSQL_PASSWORD_FILE=
 # Database to use by Gearman (Default: Gearmand)
 GEARMAN_MYSQL_DB=Gearmand
 # Table to use by Gearman (Default: gearman_queue)
-GEARMAN_MYSQL_TABLE=gearman_queue
+GEARMAN_MYSQL_TABLE=gearman_queue