update readme link styles

Author: rpearce

README.md

@@ -3,13 +3,13 @@
 [![npm version](https://img.shields.io/npm/v/@rpearce/flexible-string-replace.svg)](https://www.npmjs.com/package/@rpearce/flexible-string-replace) [![npm downloads](https://img.shields.io/npm/dm/@rpearce/flexible-string-replace.svg)](https://www.npmjs.com/package/@rpearce/flexible-string-replace) [![Build Status](https://travis-ci.org/rpearce/flexible-string-replace.svg?branch=master)](https://travis-ci.org/rpearce/flexible-string-replace) [![Coverage Status](https://coveralls.io/repos/github/rpearce/flexible-string-replace/badge.svg?branch=master)](https://coveralls.io/github/rpearce/flexible-string-replace?branch=master) [![Maintainability](https://api.codeclimate.com/v1/badges/ca092c1e9dfe10b455d7/maintainability)](https://codeclimate.com/github/rpearce/flexible-string-replace/maintainability)
 
 ## Links
-* [`Installation`](#installation)
-* [`Usage`](#usage)
-* [`All Contributors`](#contributors)
-* [`Authors`](./AUTHORS)
-* [`Changelog`](./CHANGELOG.md)
-* [`Contributing`](./CONTRIBUTING.md)
-* [`Code of Conduct`](./CODE_OF_CONDUCT.md)
+* [Installation](#installation)
+* [Usage](#usage)
+* [All Contributors](#contributors)
+* [Authors](./AUTHORS)
+* [Changelog](./CHANGELOG.md)
+* [Contributing](./CONTRIBUTING.md)
+* [Code of Conduct](./CODE_OF_CONDUCT.md)
 
 ## Installation
 ```