Merge branch 'main' into es-translation-donate

Author: priyaa-j

src/content/tutorials/en/optimizing-webgl-sketches.mdx

@@ -457,7 +457,7 @@ function draw() {
   loadPixels();
   for (let x = 0; x < width; x += 1) {
     for (let y = 0; y < height; y += 1) {
-      let idx = (y * height + x) * 4;
+      let idx = (y * width + x) * 4;
       let newValue;
       if (pixels[idx] + noise(x, y)*50 >= 220) {
         newValue = 255;

src/content/tutorials/en/variables-and-change.mdx

@@ -650,7 +650,7 @@ Add a tree (or another object) to the landscape that moves vertically (up or dow
     triangle(25, 270, 45, 240, 70, 270);
     ```
 
-- Subtract the top angle of a triangle that draws leaves (240) by `frameCount % 290` – the value stored in `cloudOneX`:
+- Subtract the top angle of a triangle that draws leaves (240) by `frameCount % 290`:
   - Modify the value for y<sub>2</sub> in the triangle above by subtracting it by `frameCount % 290`:
 
     ```js