Fix wrong language in originalLanguage tag. (#9600)

src/all/mangadex/build.gradle

@@ -6,7 +6,7 @@ ext {
     extName = 'MangaDex'
     pkgNameSuffix = 'all.mangadex'
     extClass = '.MangaDexFactory'
-    extVersionCode = 140
+    extVersionCode = 141
     isNsfw = true
 }
 

src/all/mangadex/src/eu/kanade/tachiyomi/extension/all/mangadex/MangaDexHelper.kt

@@ -213,10 +213,14 @@ class MangaDexHelper() {
                     "Content rating: " + tempContentRating.capitalize(Locale.US)
                 }
 
+            val dexLocale = Locale.forLanguageTag(lang)
+
             val nonGenres = listOf(
                 (attr.publicationDemographic ?: "").capitalize(Locale.US),
                 contentRating,
-                Locale(attr.originalLanguage ?: "").displayLanguage
+                Locale(attr.originalLanguage ?: "")
+                    .getDisplayLanguage(dexLocale)
+                    .capitalize(dexLocale)
             )
 
             val authors = mangaDataDto.relationships.filter { relationshipDto ->