docs(i18n): add missing locales and document response.* keys

Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>

Author: mmorel-35

docs/usage/i18n.md

@@ -38,14 +38,20 @@ The following locales are bundled with Swagger UI and loaded automatically when
 
 | Code | Language |
 |------|----------|
+| `ca` | Catalan (Català) |
 | `de` | German (Deutsch) |
 | `en` | English *(default / fallback)* |
 | `es` | Spanish (Español) |
 | `fr` | French (Français) |
 | `is` | Icelandic (Íslenska) |
+| `it` | Italian (Italiano) |
+| `ja` | Japanese (日本語) |
+| `ka` | Georgian (ქართული) |
 | `ko` | Korean (한국어) |
+| `pl` | Polish (Polski) |
 | `pt` | Portuguese / Brazilian Portuguese (Português do Brasil) |
 | `ru` | Russian (Русский) |
+| `tr` | Turkish (Türkçe) |
 | `zh` | Chinese Simplified (简体中文) |
 
 All locale files are located in `src/core/plugins/i18n/locales/`.
@@ -189,7 +195,14 @@ All translatable strings are identified by dot-namespaced keys.  The full catalo
 
 ### Response
 
-Response-related messages are defined in the English catalog and include whitespace-sensitive fragments used when rendering inline elements such as `<code>Accept</code>`. To avoid publishing an incomplete or stale subset here, refer to `locales/en.js` as the canonical source for `response.*` keys and their exact default strings.
+| Key | Default (English) |
+|-----|-------------------|
+| `response.controls_accept_header_prefix` | Controls  |
+| `response.controls_accept_header_suffix` |  header. |
+| `response.json_parse_error` | Can't parse JSON.  Raw result:\n\n |
+| `response.no_blob_support` | Download headers detected but your browser does not support downloading binary via XHR (Blob). |
+| `response.unrecognized_type_display_as_text` | Unrecognized response type; displaying content as text. |
+| `response.unrecognized_type_unable_to_display` | Unrecognized response type; unable to display. |
 
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