tweak sunburst font size a bit
tweak sunburst font size a bit

bmesuere/uni-test,unipept/unipept,unipept/unipept,unipept/unipept,bmesuere/uni-test,bmesuere/uni-test,unipept/unipept,unipept/unipept,bmesuere/uni-test,bmesuere/uni-test