Fix typo (#15)

Author: vanodevium

index.js

@@ -1,11 +1,11 @@
 'use strict';
 const packageJson = require('package-json');
 
-const lastestVersion = async (packageName, options) => {
+const latestVersion = async (packageName, options) => {
 	const {version} = await packageJson(packageName.toLowerCase(), options);
 	return version;
 };
 
-module.exports = lastestVersion;
+module.exports = latestVersion;
 // TODO: Remove this for the next major release
-module.exports.default = lastestVersion;
+module.exports.default = latestVersion;