refactor to avoid string concatenation in a loop
refactor to avoid string concatenation in a loop

Trivial here since there's only 4 roots, but removes an LGTM alert.
feend78/evennia,feend78/evennia,feend78/evennia,jamesbeebop/evennia,jamesbeebop/evennia,feend78/evennia,jamesbeebop/evennia