Add one to the mod index in get_random_word_token
Add one to the mod index in get_random_word_token

This fixes a bug where the last token in the database would never
be selected.

meska/cobe,LeMagnesium/cobe,LeMagnesium/cobe,DarkMio/cobe,meska/cobe,pteichman/cobe,DarkMio/cobe,wodim/cobe-ng,tiagochiavericosta/cobe,tiagochiavericosta/cobe,pteichman/cobe,wodim/cobe-ng