Fix bug "root folder name is displayed in title"
Fix bug "root folder name is displayed in title"

empty wiki root folder name
remove `NameWithoutExt`

OUCC/SyaroNote,OUCC/syaro,OUCC/syaro,OUCC/SyaroNote,OUCC/SyaroNote,OUCC/syaro,OUCC/SyaroNote,OUCC/syaro