how do I change the font size in the categories block

[hubla]

Hey guys,
If you go to http://archtopguitarsandbooks.com/ you can see in the categories block "archtop guitars (for sale)". The problem I need an answer too is how do I get "sale" on the same line as the rest of the link. My thoughts are to change the font size and it should fit on one line, but I can't figure out where I can change that setting.

Does anyone know where this can be changed?
If you have a better idea on how to fix this problem please let me know.
Thank in advance guys any help is appreciated.