chore: cssへのpathを明示的に指定

Author: kspace-trk

package.json

@@ -13,7 +13,9 @@
     "./runtime": {
       "types": "./dist/runtime/index.d.ts",
       "import": "./dist/runtime/index.mjs"
-    }
+    },
+    "./runtime/assets/css/reset.css": "./dist/runtime/assets/css/reset.css",
+    "./runtime/assets/css/fonts/mplus-1p.css": "./dist/runtime/assets/css/fonts/mplus-1p.css"
   },
   "main": "./dist/module.mjs",
   "typesVersions": {