Since version 4, Java Server Faces (or Jakarta Server Faces) has been renamed to Jakarta Faces (or simply Faces). I think the same should be done with the jsf tag (rename it to jakarta-faces). We could keep the old name as a synonym. Version specific tags (like jsf-1.2) should remain intact.
See also:
java-ee-*tojakarta-ee-*and leavejee-*names untouched (but change the description and wiki).jakarta-facesas mentionedfacesis too generic here on stack overflow for a tag. In general though everywhere else outside of SO it should be justFaces