Invalid link in documentation

[JacquesBonet]

Steps to reproduce

I'm on the following page: https://loopback.io/doc/en/lb4/Email-connector.html

This display this content parts:

Creating an email data source
Create a new email data source with the data source generator:

The "data source gnerator " link is bad

More generally, the email documentation is not in sync with Loopback 4.0

[hacksparrow]

Related - #4879

[dhmlau]

@JacquesBonet, thanks for reporting this.

For email connector, it actually won't work in LB4, please see the discussion in #1979 for work around and potential documentation we can add.

I'll use this issue to remove the email connector from the connector reference list in LB4.