Fixed Localizations in Smeltery Tooltip and WAILA

Fixes Fluid localization, and amounts in Smeltery tooltip and WAILA

Note for translators: 
gui.smeltery.molten.check have been added to list localized words for Molten, the words should be separated by a comma ",".
kindly check the en_US.lang for a single word example, and it_IT.lang for multiple words example.