Japanese translation for PMTiles (#1027)

## Launch Checklist

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checklist. -->


 - [x] Briefly describe the changes in this PR.
   simply adding Japanese translation for new input format PMTiles
 - [ ] Link to related issues.
- [ ] Include before/after visuals or gifs if this PR includes visual
changes.
 - [ ] Write tests for all new functionality.
 - [ ] Add an entry to `CHANGELOG.md` under the `## main` section.

src/locales/ja/translation.json

@@ -149,7 +149,7 @@
   "Raster (Tile URLs)": "ラスタ (Tile URLs)",
   "Raster DEM (TileJSON URL)": "ラスタ DEM (TileJSON URL)",
   "Raster DEM (XYZ URLs)": "ラスタ DEM (XYZ URL)",
-  "Vector (PMTiles)": "__STRING_NOT_TRANSLATED__",
+  "Vector (PMTiles)": "ベクトル (PMTiles)",
   "Image": "画像",
   "Video": "動画",
   "Add Source": "ソースを追加",
@@ -171,7 +171,7 @@
   "GeoJSON URL": "GeoJSON URL",
   "GeoJSON": "GeoJSON",
   "Cluster": "クラスタ",
-  "PMTiles URL": "__STRING_NOT_TRANSLATED__",
+  "PMTiles URL": "PMTiles URL",
   "Tile Size": "タイルサイズ",
   "Encoding": "エンコーディング",
   "Error:": "エラー:",