Fix syntax issue for relative links in README (#5358)

Author: burz

README.md

@@ -4,7 +4,7 @@
 
 # web3.js - Ethereum JavaScript API
 
-[![Discord][discord-image]][discord-url] [![StackExchange][stackexchange-image]][stackexchange-url] [![NPM Package Version][npm-image-version]][npm-url] [![NPM Package Downloads][npm-image-downloads]][npm-url] [![Build Status][actions-image]][actions-url] [![Dev Dependency Status][deps-dev-image]][deps-dev-url] [![Coverage Status][coveralls-image]][coveralls-url] [![Lerna][lerna-image]][lerna-url] [![Netlify Status][netlify-image]][netlify-url] [![GitPOAP Badge](gitpoap-image)](gitpoap-url)
+[![Discord][discord-image]][discord-url] [![StackExchange][stackexchange-image]][stackexchange-url] [![NPM Package Version][npm-image-version]][npm-url] [![NPM Package Downloads][npm-image-downloads]][npm-url] [![Build Status][actions-image]][actions-url] [![Dev Dependency Status][deps-dev-image]][deps-dev-url] [![Coverage Status][coveralls-image]][coveralls-url] [![Lerna][lerna-image]][lerna-url] [![Netlify Status][netlify-image]][netlify-url] [![GitPOAP Badge][gitpoap-image]][gitpoap-url]
 
 This is the Ethereum [JavaScript API][docs]
 which connects to the [Generic JSON-RPC](https://github.com/ethereum/wiki/wiki/JSON-RPC) spec.