[11_17] Use UnBatang instead of unbatang for default korean font

[da-liii]

On debian

$ dpkg-query -L fonts-unfonts-core                                            
/.
/etc
/etc/fonts
/etc/fonts/conf.d
/usr
/usr/share
/usr/share/doc
/usr/share/doc/fonts-unfonts-core
/usr/share/doc/fonts-unfonts-core/README.Debian
/usr/share/doc/fonts-unfonts-core/changelog.Debian.gz
/usr/share/doc/fonts-unfonts-core/copyright
/usr/share/fontconfig
/usr/share/fontconfig/conf.avail
/usr/share/fontconfig/conf.avail/90-fonts-unfonts-core.conf
/usr/share/fonts
/usr/share/fonts/truetype
/usr/share/fonts/truetype/unfonts-core
/usr/share/fonts/truetype/unfonts-core/UnBatang.ttf
/usr/share/fonts/truetype/unfonts-core/UnBatangBold.ttf
/usr/share/fonts/truetype/unfonts-core/UnDinaru.ttf
/usr/share/fonts/truetype/unfonts-core/UnDinaruBold.ttf
/usr/share/fonts/truetype/unfonts-core/UnDinaruLight.ttf
/usr/share/fonts/truetype/unfonts-core/UnDotum.ttf
/usr/share/fonts/truetype/unfonts-core/UnDotumBold.ttf
/usr/share/fonts/truetype/unfonts-core/UnGraphic.ttf
/usr/share/fonts/truetype/unfonts-core/UnGraphicBold.ttf
/usr/share/fonts/truetype/unfonts-core/UnGungseo.ttf
/usr/share/fonts/truetype/unfonts-core/UnPilgi.ttf
/usr/share/fonts/truetype/unfonts-core/UnPilgiBold.ttf
/usr/share/metainfo
/usr/share/metainfo/fonts-unfonts-core.metainfo.xml
/etc/fonts/conf.d/90-fonts-unfonts-core.conf