all: fix spelling errors

Signed-off-by: Walter Werner SCHNEIDER <contact@schnwalter.eu>
Signed-off-by: Elias Naur <mail@eliasnaur.com>

internal/rendertest/bench_test.go

@@ -57,7 +57,7 @@ func finishBenchmark(b *testing.B, w *headless.Window) {
 }
 
 func BenchmarkDrawUICached(b *testing.B) {
-	// As BecnhmarkDraw but the same op.Ops every time that is not reset - this
+	// As BenchmarkDraw but the same op.Ops every time that is not reset - this
 	// should thus allow for maximal cache usage.
 	gtx, w, th := setupBenchmark(b)
 	drawCore(gtx, th)

internal/rendertest/clip_test.go

@@ -59,7 +59,7 @@ func TestPaintClippedBorder(t *testing.T) {
 	})
 }
 
-func TestPaintClippedCirle(t *testing.T) {
+func TestPaintClippedCircle(t *testing.T) {
 	run(t, func(o *op.Ops) {
 		r := float32(10)
 		clip.RRect{Rect: f32.Rect(20, 20, 40, 40), SE: r, SW: r, NW: r, NE: r}.Add(o)

internal/rendertest/render_test.go

@@ -85,7 +85,7 @@ func TestRepeatedPaintsZ(t *testing.T) {
 }
 
 func TestNoClipFromPaint(t *testing.T) {
-	// ensure that a paint operation does not polute the state
+	// ensure that a paint operation does not pollute the state
 	// by leaving any clip paths in place.
 	run(t, func(o *op.Ops) {
 		a := f32.Affine2D{}.Rotate(f32.Pt(20, 20), math.Pi/4)