Content is now organized by game version and source

This link potentially matches multiple versions of "Will-o'-Wisp":

• Will-o'-Wisp (System Reference Document 5.1)

  CR 2 · Undead (Tiny)

• Will-o-Wisp (Monstrous Menagerie)

  CR 2 · Undead (Small)

• Will-o'-Wisp (System Reference Document 5.2)

  CR 2 · Undead (Small)

• Will-o'-Wisp (Black Flag SRD)

  CR 2 · Undead (Tiny)