fix(Navbar): CFPB logo always takes you to consumerfinance.gov (#296)

The CFPB logo should always navigate to consumerfinance.gov instead of a
generic / to allow for applications with their own routing that are
using the navbar, as per @natalia-fitzgerald's designs.

## Changes

- change `href` to be `https://www.consumerfinance.gov/`

## How to test this PR

1. Does clicking the CFPB logo in the NavBar take you to the CFPB home
page?

## Notes

- we could make the logo's `href` into a prop, but clicking this logo
across all CFPB properties should take you to `www.consumerfinance.gov`,
so it's better to hardcode it for consistency

src/components/Navbar/Navbar.tsx

@@ -5,7 +5,12 @@ import './navbar.less';
 
 export function CfpbLogo(): JSX.Element {
   return (
-    <Link href='/' title='Home' aria-label='Home' className='o-header_logo'>
+    <Link
+      href='https://www.consumerfinance.gov/'
+      title='Home'
+      aria-label='Home'
+      className='o-header_logo'
+    >
       <img className='o-header_logo-img' src={CFPBLogo} alt='CFPB Logo' />
     </Link>
   );