chore(textlint): use pretty-error formatter

Author: azu

package.json

@@ -23,7 +23,7 @@
     "build": "gitbook build",
     "eslint": "eslint src/**/*.js",
     "eslint:md": "eslint -c .md.eslintrc --ext .md ja/**/*.md",
-    "textlint": "summary-to-path | xargs textlint --rule spellcheck-tech-word --rule max-ten",
+    "textlint": "summary-to-path | xargs textlint --rule spellcheck-tech-word --rule max-ten -f pretty-error",
     "test:example": "find ./src -name '*-example.js' | xargs babel-node",
     "test:js": "mocha",
     "test": "npm-run-all --parallel test:js test:example textlint eslint:md eslint build",