Docs update request: /stylus-by-example/function

[siphonelee]

Source: https://docs.arbitrum.io/stylus-by-example/function

In the example code below, should "#[external]" be changed to "#[public]" or not?

#[external]. <-------
impl Contract {
// Define an external function to get the owner of the contract
pub fn owner(&self) -> Address {
self.owner.get()
}
}