Update README.md

README.md

@@ -9,7 +9,7 @@
 -v, --verbose                  enable the verbose mode
 -w, --way=VALUE                the way of schematic (0 or 1), default value is 0
 -iminy, --ignore-min-y=VALUE   ignore blocks below the specified layer
--imaxy, --ignore-max-y=VALUE  ignore blocks above the specified layer
+-imaxy, --ignore-max-y=VALUE   ignore blocks above the specified layer
 -e, --excavate                 delete all blocks which doesn't have at lease one face connected with air
 -s, --scale=VALUE              increase the scale of each block  
   ```