README: Fix my email address
The domain is kinvolk.io, not kinvolk.com. But, just that we are there,
let's use my Microsoft email.
@@ -32,7 +32,7 @@ prefer private disclosure, please email to all of the maintainers:
- fpaoline@redhat.com
- rbryant@redhat.com
-- rodrigo@kinvolk.com
+- rodrigoca@microsoft.com
- jliebermann@microsoft.com
We aim for initial response to vulnerability reports within 48
