add creating multiple databases to the docs

mysql/docker-entrypoint-initdb.d/createdb.sql.example

@@ -1,20 +1,20 @@
-###
-### Copy createdb.sql.example to createdb.sql
-### then uncomment then set database name and username to create you need databases
+#
+# Copy createdb.sql.example to createdb.sql
+# then uncomment then set database name and username to create you need databases
 #
 # example: .env MYSQL_USER=appuser and need db name is myshop_db
 #
 #    CREATE DATABASE IF NOT EXISTS `myshop_db` ;
 #    GRANT ALL ON `myshop_db`.* TO 'appuser'@'%' ;
 #
-###
-### this sql script is auto run when mysql container start and $DATA_SAVE_PATH/mysql not exists.
-###
-### if your $DATA_SAVE_PATH/mysql is exists and you do not want to delete it, you can run by manual execution:
-###
-###     docker-compose exec mysql bash
-###     mysql -u root -p < /docker-entrypoint-initdb.d/createdb.sql
-###
+#
+# this sql script will auto run when the mysql container starts and the $DATA_SAVE_PATH/mysql not found.
+#
+# if your $DATA_SAVE_PATH/mysql exists and you do not want to delete it, you can run by manual execution:
+#
+#     docker-compose exec mysql bash
+#     mysql -u root -p < /docker-entrypoint-initdb.d/createdb.sql
+#
 
 #CREATE DATABASE IF NOT EXISTS `dev_db_1` COLLATE 'utf8_general_ci' ;
 #GRANT ALL ON `dev_db_1`.* TO 'default'@'%' ;