Fix link to homepage

We do not want to stay in the React app for the archived docs. This allows loading the top page again whereas before you would end up at a blank page with the header and footer of the archived docs.

src/components/MyNavbar/index.js

@@ -8,7 +8,7 @@ import { Nav, Navbar } from "react-bootstrap";
 export default function MyNavbar() {
   return (
     <Navbar collapseOnSelect expand="lg" bg="dark" variant="dark" style={{ borderTop: '8px solid #1ba89c' }} >
-      <Navbar.Brand as={Link} to="/" >
+      <Navbar.Brand href="/">
         <img src={logo} className="img-fluid" style={{ maxHeight: 80 }} alt="Micrometer" />
       </Navbar.Brand>
       <Navbar.Toggle aria-controls="responsive-navbar-nav" />