Add removed step for metamask plugin download (#2667)

Author: SarahSoutoul

docs/guides/configure/auth-strategies/web3/metamask.mdx

@@ -22,6 +22,7 @@ Enabling [MetaMask](https://metamask.io/) as a Web3 provider allows your users t
 
 1. In the Clerk Dashboard, navigate to the [**Web3**](https://dashboard.clerk.com/last-active?path=user-authentication/web3) page.
 1. From the list of web3 providers, enable **MetaMask**.
+1. Download the [Metamask plugin](https://metamask.io/download/) and install it on your browser to ensure a seamless login flow.
 
 ## Test authentication