Update Presets.md

Same amplitude division improvement to Drip Wave preset

Author: AnonymousUser98

presets/Presets.md

@@ -176,9 +176,9 @@
 
 ## Drip Wave
 
-**GGB:** `(((2)/(π)) sin^(-1)(sin(t vf))+sin^(19)(t vf)) va`
+**GGB:** `(((2)/(π)) sin^(-1)(sin(t vf))+sin^(19)(t vf))*((va)/(2))`
 
-**JS:** `(((2)/(Math.PI))*Math.asin(Math.sin(t*vf))+(Math.sin(t*vf))^19)*va`
+**JS:** `(((2)/(Math.PI))*Math.asin(Math.sin(t*vf))+(Math.sin(t*vf))^19)*((va)/(2))`
 
 
 
@@ -222,3 +222,4 @@
 
 
 
+