fix: npm publish

For unknown reasons, npm publish can't handle the path.
Fix this by changing directory.

Author: davidwalschots

package.json

@@ -10,7 +10,7 @@
     "e2e": "ng e2e",
     "build:app": "ng build --configuration production",
     "build:lib": "rimraf dist && ng-packagr -p angular-reactive-validation/package.json && rimraf dist/angular-reactive-validation.tgz && cpx README.md dist/angular-reactive-validation",
-    "publish": "npm publish dist/angular-reactive-validation"
+    "publish": "cd dist/angular-reactive-validation && npm publish --dry-run && cd ../.."
   },
   "private": true,
   "dependencies": {