fix: Add Development Doc translation and English only notice (#1680)

* fix: Add Development Doc translation and English only notice

* fix: Leave existing key unchaged

Update component ref to new key instead

apps/web/src/routes/index.svelte

@@ -85,7 +85,7 @@
               </Hidden>
 
               <Button style="primary" href="https://librelingo.app/docs/">
-                <Translate key="index.development_docs">
+                <Translate key="index.development_docs_english_only">
                   Development documentation
                 </Translate>
               </Button>

apps/web/src/translation/en.json

@@ -8,5 +8,6 @@
     "about.meta.description": "LibreLingo is an open source, community-driven language-learning platform that gives its users and contributors a way to influence its future.",
     "development.meta.description": "Read about the recent major new features in LibreLingo, an experiment to create a community driven language-learning platform.",
     "sign-up.meta.description": "Sign up to LibreLingo and learn a language for free.",
-    "index.development_docs": "Development documentation"
+    "index.development_docs": "Development documentation",
+    "index.development_docs_english_only": "Development documentation (English only)"
 }

apps/web/src/translation/eo.json

@@ -2,5 +2,6 @@
     "index.subtitle": "klopodo por krei komunum-zorgatan platformon por lerni lingvojn",
     "index.start_spanish_course": "Eklerni la hispanan",
     "index.about_librelingo": "Pri LibreLingo",
-    "meta.title": "LibreLingo - libere lernu lingvon"
+    "meta.title": "LibreLingo - libere lernu lingvon",
+    "index.development_docs_english_only": "Disvolva Dokumentaro (nur en la angla)"
 }

apps/web/src/translation/it.json

@@ -2,5 +2,6 @@
     "index.subtitle": "un esperimento per creare una piattaforma per imparare le lingue gestita da una comunità",
     "index.start_spanish_course": "Incomincia a imparare lo spagnolo",
     "index.about_librelingo": "Informazioni su LibreLingo",
-    "meta.title": "LibreLingo - impara liberamente una lingua"
+    "meta.title": "LibreLingo - impara liberamente una lingua",
+    "index.development_docs_english_only": "Documentazione di sviluppo (solo in inglese)"
 }