Chore: fix incorrect URL, and broken README badge (#1806)

* fix broken badge in readme

* this goes without saying

Author: artursapek

CONTRIBUTING.md

@@ -14,13 +14,13 @@ Run `npm run build` at the root fo the repo
 
 3) Start
 
-Start wormhole-connect UI and view in browser at localhost:3000
+Start wormhole-connect UI:
 ```bash
 # in /wormhole-connect
 npm run start # testnet
 ```
 
-Start builder UI and view in browser at localhost:3000
+Start builder UI:
 ```bash
 # in /builder
 npm run start

README.md

@@ -1,6 +1,6 @@
 # Wormhole Connect
 
-[![npm version](https://img.shields.io/npm/v/@wormhole-foundation/wormhole-connect.svg)](https://www.npmjs.com/package/@wormhole-foundation/wormhole-connect) ![CI build](https://github.com/wormhole-foundation/wormhole-connect/actions/workflows/lint.yml/badge.svg)
+[![npm version](https://img.shields.io/npm/v/@wormhole-foundation/wormhole-connect.svg)](https://www.npmjs.com/package/@wormhole-foundation/wormhole-connect) ![CI build](https://github.com/wormhole-foundation/wormhole-connect/actions/workflows/build.yml/badge.svg)
 
 Wormhole Connect is a customizable React widget that can perform cross-chain bridging with Wormhole.