add booster ring, update images

src/pages/classes/fighter.md

@@ -28,7 +28,7 @@ An adventurer that specializes in combat.
 Pick one at 2nd, 6th, 10th, and 14th level.
 
 1. **Berserker**: After striking a killing blow while in melee with multiple foes, may immediately make a free attack against another foe at –2.
-2. **Dual-Wielder**: May wield a Light weapon in off hand to gain choice of either +1 AC or +1 attack (choose before initiative is rolled).
+2. **Dual-Wielder**: Gains [Dual Wielding](/rules/combat.md#dual-wielding). If DEX > 13 and wielding both a one-handed weapon and a Light weapon in off hand, may make an attack with each one.
 3. **Hunter**: +1 to attack and damage rolls when in combat with foes of a specific type (ex: undead, clerics, dragons, giants, etc.). The type must be chosen when this talent is selected.
 4. **Leader**: Mercenaries or retainers under command and within 60' gain a +1 bonus to morale and loyalty checks. All allies within 60' get +1 bonus to saves against fear effects.
 5. **Specialist**: Expertise with a specific type of weapon (ex: whips, one-handed swords, crossbows, etc.) grants +1 to attack and damage rolls when using one.