match fast charge knack to statblock command

config @ 113e7a85

-Subproject commit 2319e316dba57c16ae7f23ff5a2a7462e6f30f0b
+Subproject commit 113e7a853ac1d9108739c1047e45cb225941746a

knacks.tex

@@ -58,9 +58,9 @@ This Knack grants immunity to all Sneak Attacks from Ranged weapons, such as bow
 
 \subsubsection{Fast Charge}
 
-When the character makes an uninterrupted movement of at least 6~\glspl{step}, they gain a Bonus to Strength, and Dexterity equal to half the number of Knacks they have (rounded up), for a single attack.
+When the character makes an uninterrupted movement of at least 4~\glspl{step}, they gain a +1 Bonus to Strength and Dexterity for their next \gls{action}.
 
-The character can spend multiple \glspl{ap} to move, as long as they don't do anything else with their \glspl{ap} before making an attack.
+The character can spend multiple \glspl{ap} to move in order to build up momentum.
 
 \subsubsection{Guardian}