Update fuzzy value for corner-shape superellipse concave test

Author: cupidsity

css/css-borders/corner-shape/corner-shape-superellipse-concave.html

@@ -3,7 +3,7 @@
 <title>CSS Borders and Box Decorations 4: per-corner concave 'corner-shape' superellipse values</title>
 <link rel="help" href="https://drafts.csswg.org/css-borders-4/#corner-shaping">
 <link rel="match" href="corner-shape-superellipse-concave-ref.html">
-<meta name="fuzzy" content="maxDifference=0-70; totalPixels=347"/>
+<meta name="fuzzy" content="maxDifference=0-70; totalPixels=0-347"/>
 <style>
     .target {
         background: green;