fix(package.json): update destination of postcss generation scripts

package.json

@@ -9,8 +9,8 @@
     "url": "https://code.podlibre.org/podlibre/castopod.git"
   },
   "scripts": {
-    "build:css": "postcss app/Javascript/assets/styles/index.css -o app/Views/index.css",
-    "watch:css": "postcss app/Javascript/assets/styles/index.css -o app/Views/index.css -w",
+    "build:css": "postcss app/Javascript/assets/styles/index.css -o public/index.css",
+    "watch:css": "postcss app/Javascript/assets/styles/index.css -o public/index.css -w",
     "commit": "git-cz"
   },
   "devDependencies": {
@@ -32,4 +32,4 @@
       "path": "cz-conventional-changelog"
     }
   }
-}
+}
\ No newline at end of file