change qr-code and link to marc-bouvier.fr

index.md

 # Marc Bouvier
 
-[![QR code](img/qrcode_marc-bouvier.froggit.page.png)](https://marc-bouvier.froggit.page/marc-bouvier.fr/)
+[![QR code](img/qrcode_marc-bouvier.fr.png)](https://marc-bouvier.fr/)
 
 [Blog](https://baldir.fr)
 [LinkedIn](https://www.linkedin.com/in/profileofmarcbouvier/)