These are the Gryphonpike Companions.
Arriving in Strongwater Barrow, the Companions find the town riddled with plague and death. Ending the curse and saving the survivors means going into the swamps where monsters lurk and witches wait. Sounds like exactly their kind of day.
Witch Hunt is an adventure fantasy novella.
Also in the Gryphonpike Chronicles series:
The Barrows (omnibus edition containing all four novellas)
Key Themes: Fantasy, Epic Fantasy, Sword and Sorcery, Elves, Archery, Adventure, Action, Dragon, Witch