[HangTruyen + GocTruyenTranh] Fix getPages (#1778)

src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/GocTruyenTranh.kt

@@ -197,7 +197,7 @@ internal class GocTruyenTranh(context: MangaLoaderContext) :
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(domain)
 		val doc = webClient.httpGet(fullUrl).parseHtml()
-		return doc.select("img.lozad[data-src]").map { img ->
+		return doc.select("img.lozad.mx-auto.transition-all.max-w-full.relative").map { img ->
 			val url = img.attr("data-src")
 			MangaPage(
 				id = generateUid(url),

src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/HangTruyen.kt

@@ -166,8 +166,8 @@ internal class HangTruyen(context: MangaLoaderContext) : LegacyPagedMangaParser(
 		val fullUrl = chapter.url.toAbsoluteUrl(domain)
 		val doc = webClient.httpGet(fullUrl).parseHtml()
 		
-		val script = doc.selectFirst("script:containsData(let mangaDetail)")?.data() ?: return emptyList()
-		val chapterDetailJson = script.substringAfter("chapterDetail=").substringBefore("}</script>") + "}"
+		val script = doc.selectFirst("script:containsData(const mangaDetail)")?.data() ?: return emptyList()
+		val chapterDetailJson = script.substringAfter("const chapterDetail = ").substringBefore("}</script>") + "}"
 		val chapterDetail = JSONObject(chapterDetailJson)
 		
 		return chapterDetail.getJSONArray("images").mapJSON { image ->