Remove npx from site

Author: jeffsmale90

packages/site/package.json

@@ -8,7 +8,7 @@
     "build": "GATSBY_TELEMETRY_DISABLED=1 gatsby build",
     "clean": "rimraf public",
     "lint": "yarn lint:eslint && yarn lint:misc --check",
-    "lint:eslint": "npx eslint . --cache --ext js,ts",
+    "lint:eslint": "yarn eslint . --cache --ext js,ts",
     "lint:fix": "yarn lint:eslint --fix && yarn lint:misc --write",
     "lint:misc": "prettier '**/*.json' '**/*.md' '!CHANGELOG.md' --ignore-path .gitignore",
     "start": "GATSBY_TELEMETRY_DISABLED=1 gatsby develop"