Rewrite `Interoperability`'s `Invoking Static Methods` paragraph

[ninaandrup]

We have changed the syntax of importing static methods from

import java.lang.String:valueOf(Bool);
valueOf(true)

to

import static java.lang.String.valueOf(Bool);
valueOf(true)

The paragraph can be found here.

[ninaandrup]

@magnus-madsen Do you want to rewrite this, or should I do it?

[magnus-madsen]

I think you should give it an attempt :) You can do it 👍