Hentai2Read: fix cover (#2175)

src/en/hentai2read/build.gradle

@@ -1,7 +1,7 @@
 ext {
     extName = 'Hentai2Read'
     extClass = '.Hentai2Read'
-    extVersionCode = 15
+    extVersionCode = 16
     isNsfw = true
 }
 

src/en/hentai2read/src/eu/kanade/tachiyomi/extension/en/hentai2read/Hentai2Read.kt

@@ -162,7 +162,7 @@ class Hentai2Read : ParsedHttpSource() {
         manga.genre = infoElement.select("li:contains(Category) > a, li:contains(Content) > a").joinToString(", ") { it.text() }
         manga.description = buildDescription(infoElement)
         manga.status = infoElement.select("li:contains(Status) > a").text().orEmpty().let { parseStatus(it) }
-        manga.thumbnail_url = document.select("a#js-linkNext > img").attr("src")
+        manga.thumbnail_url = document.select("a#js-linkNext img").attr("src")
         manga.title = document.select("h3.block-title > a").first()!!.ownText().trim()
         return manga
     }