From Fedora Project Wiki
Link to Bugzilla, quickly. Use like:
{{bz|123456}}
Which will yield:
RHBZ #123456
Using interwiki links
Bug #[[rhbug:123456|123456]]
will yield:
Bug #123456
This template actually uses the interwiki link, so both of these are synonymous. We'd prefer you use the interwiki link, but just be consistent with your usage.