Minor stylelint exception formatting change (#2889)

Slightly tidier

p/themes/base-theme/template.css

@@ -573,9 +573,7 @@ a.btn {
 }
 
 input[type="search"] {
-	/* stylelint-disable property-no-vendor-prefix */
-	-webkit-appearance: none;
-	/* stylelint-enable property-no-vendor-prefix */
+	-webkit-appearance: none; /* stylelint-disable-line property-no-vendor-prefix */
 }
 
 /*=== Body */

p/themes/base-theme/template.rtl.css

@@ -573,9 +573,7 @@ a.btn {
 }
 
 input[type="search"] {
-	/* stylelint-disable property-no-vendor-prefix */
-	-webkit-appearance: none;
-	/* stylelint-enable property-no-vendor-prefix */
+	-webkit-appearance: none; /* stylelint-disable-line property-no-vendor-prefix */
 }
 
 /*=== Body */