Example config should have idpCert instead of cert option starting from 5.0.0

[srd90]

@node-saml/node-saml 5.0.0 refactored cert to idpCert:

• https://github.com/node-saml/node-saml/blob/v5.0.0/CHANGELOG.md#-major-changes
• Rename cert to idpCert and signingCert to publicCert node-saml#343

Change has been reflected to @node-saml/passport-saml ADFS related example:

passport-saml/README.md

Line 234 in 4d75de4

idpCert: 'MIICizCCAfQCCQCY8tKaMc0BMjANBgkqh ... W==',

but it was not reflected to "general" example:

passport-saml/README.md

Line 70 in 4d75de4

cert: "fake cert", // cert must be provided

Links to codebase point to 5.0.0 version.

Aforementioned minor documentation issue might explain this comment at another issue: node-saml/node-saml#379 (comment)

...
You pointed me to the use of idpcert instead of cert for my MSEntra IDP. FYI: Our users/companies may not (probably won't) all use MSEntra.
...

Comment gave an impression (when combined with other info) that user had interpreted documentation and comments so that MS related IdPs would use idpCert and others cert. Let the record show that node-saml/node-saml#379 should have been discussion and at passport-saml project.

Environment

• passport-saml version: 5.0.0