Update URL for TibetanMachineUniAlpha.ttf.
Update URL for TibetanMachineUniAlpha.ttf.

sanskrit-coders/m17n-db,xmirror/m17n-db,sanskrit-coders/m17n-db,xmirror/m17n-db,xmirror/m17n-db,sanskrit-coders/m17n-db,xmirror/m17n-db