Use zero-based index for id

Related issue:
- AdguardTeam/AdguardFilters#75762

Related commits:
- gorhill/uBlock@cdf6088

Co-authored-by: Raymond Hill <rhill@raymondhill.net>

assets/resources/resources.txt

@@ -597,7 +597,7 @@ googlesyndication.com/adsbygoogle.js application/javascript
 	const phs = document.querySelectorAll('.adsbygoogle');
 	const css = 'height:1px!important;max-height:1px!important;max-width:1px!important;width:1px!important;';
 	for ( let i = 0; i < phs.length; i++ ) {
-		const id = `aswift_${(i+1)}`;
+		const id = `aswift_${(i)}`;
 		if ( document.querySelector(`iframe#${id}`) !== null ) { continue; }
 		const fr = document.createElement('iframe');
 		fr.id = id;