Update lunaria.config.json for "jp" (Japanese) (#3156)

Co-authored-by: Ayres Vitor <gitkey@virtuaires.com.br>

Author: J1-takai

.github/labeler.yml

@@ -5,6 +5,7 @@ i18n:
   - src/content/docs/fr/**/*
   - src/content/docs/it/**/*
   - src/content/docs/zh-cn/**/*
+  - src/content/docs/jp/**/*
 
 "i18n: es":
   - src/content/docs/es/**/*
@@ -17,3 +18,7 @@ i18n:
 
 "i18n: zh-cn":
   - src/content/docs/zh-cn/**/*
+
+"i18n: jp":
+  - src/content/docs/jp/**/*
+

lunaria.config.json

@@ -39,6 +39,10 @@
     {
       "label": "简体中文",
       "lang": "zh-cn"
+    },
+    {
+      "label": "日本語",
+      "lang": "jp"
     }
   ],
   "dashboard": {