fix(lint): re-arrange scripts (#36511)

tools/scripts/lint/index.js

@@ -0,0 +1,12 @@
+const lintRules = require('./.markdownlintrc');
+const linter = require('./linter');
+const argv = require('yargs').argv;
+
+const isMDRE = /.*\.md$/;
+
+const lint = linter(lintRules);
+
+const files = argv._.filter(arg => isMDRE.test(arg));
+files.forEach(path => lint({ path: path }));
+
+module.exports = lint;