Update package.json

Author: schmidt-sebastian

packages/firestore/package.json

@@ -7,7 +7,7 @@
     "build": "rollup -c",
     "dev": "rollup -c -w",
     "lint": "tslint -p tsconfig.json -c tslint.json 'src/**/*.ts' 'test/**/*.ts'",
-    "lint:fix": "tslint --fix -p tsconfig.json -c tslint.json  'src/**/*.ts' 'test/**/*.ts'",
+    "lint:fix": "tslint --fix -p tsconfig.json -c tslint.json 'src/**/*.ts' 'test/**/*.ts'",
     "test": "run-s lint test:all",
     "test:all": "run-p test:browser test:node",
     "test:browser": "karma start --single-run",