RE: [security-services] Errata in ManageNameIDRequest text

> "After establishing a name identifier for a principal, an 
> identity provider wishing to change the value and/or format 
> of the identifier that it will use when referring to the 
> principal" - Core line 2412

That's why I'm pretty certain the intent was exactly that, but the schema
and other text doesn't match it.

-- Scott