Documentation has wrong code example in the 'Customizing OpenSAML’s AuthnRequest Instance' section

[nyszilard]

In the Customizing OpenSAML’s AuthnRequest Instance section the code example is wrong, because:

• There is no parameterless DefaultSaml2AuthenticationRequestContextResolver constructor
• OpenSamlAuthenticationRequestFactory is deprecated, so it should use OpenSaml4AuthenticationRequestFactory instead
• It should use Converter<Saml2AuthenticationRequestContext, AuthnRequest> instead of Converter<MySaml2AuthenticationRequestContext, AuthnRequest>

[nor-ek]

If you won't I can work on this.

[nor-ek]

Hey @nyszilard here is the pull request #10463. I'm not sure about resolver creation example.