Update ArsonistInfoLong with ignition condition

Added note about ignition condition for Arsonist.

Resources/Lang/en_US.json

@@ -801,7 +801,7 @@
   "InspectorInfoLong": "(Crewmates):\\nTo check if two players are on the same team, use the command /cp [player id 1] [player id 2]. Neutral killers are counted as part of the same team. Non-Killing Neutrals are counted as separate teams. The Trickster is counted as crew, and Madmates are counted as Impostor. The Lawyer/Follower and its target count as the same team. You will receive an affirmation message if they are in the same team or a denial message if they are not.",
   "TimeMasterInfoLong": "(Crewmates):\\nAs the Time Master, use the vents/pet to rewind time to a few seconds before. Players will be teleported back to their positions from that time. Players who died within that time will be revived.",
   "CrusaderInfoLong": "(Crewmates):\\nAs the Crusader, use your kill button to crusade a player. If that player gets attacked, you'll kill the attacker.",
-  "ArsonistInfoLong": "(Neutrals):\\nArsonist can douse by clicking the kill button on a player and following them for a few seconds. When dousing starts, successful dousing is indicated by a shield animation (only visible to themselves). When the Arsonist douses all surviving players, they can vent/pet their pet to start a fire and win alone. If player name shows 「△」, they're being doused; if it shows 「▲」, they're completely doused.",
+  "ArsonistInfoLong": "(Neutrals):\\nArsonist can douse by clicking the kill button on a player and following them for a few seconds. When dousing starts, successful dousing is indicated by a shield animation (only visible to themselves). When the Arsonist douses all surviving players, they can vent/pet their pet to start a fire and win alone. If player name shows 「△」, they're being doused; if it shows 「▲」, they're completely doused. Note that if 'Can Ignite Anytime' is enabled, the Arsonist needs to use their kill button on a fully doused player to ignite.",
   "JesterInfoLong": "(Neutrals):\\nJester wins alone if voted out but loses if still alive at the end. Jester, Executioner, and Innocent can win together.",
   "TerroristInfoLong": "(Neutrals):\\nIf the Terrorist completes all tasks and dies, they win the game alone.",
   "ExecutionerInfoLong": "(Neutrals):\\nThe Executioner has a target with a diamond symbol next to their name. If the target dies, the Executioner may become a Crewmate, Jester, or Opportunist. If the target is voted out, the Executioner wins.",