Simplify comments to be more concise and student-like

- Removed verbose explanations
- Made comments shorter and more casual
- Focus on key concepts rather than formal descriptions

01/Mux4Way16.hdl

@@ -14,7 +14,7 @@ CHIP Mux4Way16 {
     OUT out[16];
 
     PARTS:
-    // Use two levels of Mux16: first level selects between pairs, second level selects final output
+    // Two levels of Mux16
     Mux16(a=a, b=b, sel=sel[0], out=tmp1);
     Mux16(a=c, b=d, sel=sel[0], out=tmp2);
     Mux16(a=tmp1, b=tmp2, sel=sel[1], out=out);