Fix test/compute_builds.wgsl

The shader was failing new binary operator validation

Bug: tint:354
Change-Id: I779d96c19b12675ccd5dc348fa0d8be3aadf38c1
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/45121
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
diff --git a/test/compute_boids.wgsl b/test/compute_boids.wgsl
index 0289b76..47f7160 100644
--- a/test/compute_boids.wgsl
+++ b/test/compute_boids.wgsl
@@ -81,7 +81,7 @@
 
   var pos : vec2<f32>;
   var vel : vec2<f32>;
-  for(var i : u32 = 0u; i < 5u; i = i + 1) {
+  for(var i : u32 = 0u; i < 5u; i = i + 1u) {
     if (i == index) {
       continue;
     }