1. Use more readable mount point information
2. Fix some typos
eg:
$ df -Th
Filesystem Type Size Used Avail Use% Mounted on
localhost:8888:/ fuse.seaweedfs 206G 512 206G 1% /mnt/weedfs
$ mount | grep weedfs
localhost:8888:/ on /mnt/weedfs type fuse.seaweedfs (rw,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other)
Signed-off-by: Lei Liu <lei01.liu@horizon.ai>
