function renderV fix (#3045)

This was probably not noticed before because the main loop does not use this function at all.

-removed leftover 3rd dimention variable "k" from line 88 and 89
-removed leftover "this.canvas." from line 90

Co-authored-by: Kobe Liesenborgs <[email protected]>

Author: LeithBA

CodingChallenges/CC_132_FluidSimulation/P5/fluid.js

@@ -85,9 +85,9 @@ class Fluid {
       for (let j = 0; j < N; j++) {
         let x = i * SCALE;
         let y = j * SCALE;
-        let vx = this.Vx[IX(i, j, k)];
-        let vy = this.Vy[IX(i, j, k)];
-        this.canvas.stroke(0);
+        let vx = this.Vx[IX(i, j)];
+        let vy = this.Vy[IX(i, j)];
+        stroke(0);
 
         if (!(abs(vx) < 0.1 && abs(vy) <= 0.1)) {
           line(x, y, x + vx * SCALE, y + vy * SCALE);