Update node-providers.mdx (#219)

Author: enlightened88

docs/base-chain/tools/node-providers.mdx

@@ -182,7 +182,7 @@ import {HeaderNoToc} from "/snippets/headerNoToc.mdx";
 
 ## Unifra
 
-[Unifra](https://base.unifra.io/) is a Web3 developer platform that provides tools, APIs, and node infrastructure, and provides access to Base nodes that are nodes are reliable, scalable, and easy to use.
+[Unifra](https://www.unifra.io) is a Web3 developer platform that provides tools, APIs, and node infrastructure, and provides access to Base nodes that are nodes are reliable, scalable, and easy to use.
 
 <HeaderNoToc title="Supported Networks"/>