refactor(i18n): show language names as endonyms in picker (#514)

* refactor(i18n): show language names as endonyms in picker

* docs(changelog): add language-endonyms entry for #514

src/locales/en.ts

@@ -582,13 +582,13 @@ export const enTranslation = {
     title: 'Settings',
     language: 'Language',
     languageEn: 'English',
-    languageDe: 'German',
-    languageFr: 'French',
-    languageNl: 'Dutch',
-    languageZh: 'Chinese',
-    languageNb: 'Norwegian',
-    languageRu: 'Russian',
-    languageEs: 'Spanish',
+    languageDe: 'Deutsch',
+    languageEs: 'Español',
+    languageFr: 'Français',
+    languageNl: 'Nederlands',
+    languageNb: 'Norsk',
+    languageRu: 'Русский',
+    languageZh: '中文',
     font: 'Font',
     fontHintOpenDyslexic: 'Dyslexia-friendly · no Chinese support',
     theme: 'Theme',