build: Fix stylelint-disable

Add missing word-break to stylelint-disable, which makes it working as
expected, but newer stylelint requires a word break.
Side-effect from stylelint/stylelint#6381

Mistake in ea6a419

Change-Id: If5a8317d82e3e4bdcd6ebf48f9d2af2aea040eb7

resources/embedPlayerIframe.css

@@ -10,7 +10,7 @@ body {
 	padding: 0;
 }
 
-/* stylelint-disableselector-max-id */
+/* stylelint-disable selector-max-id */
 
 #videoContainer .videoHolder {
 	position: static;