Update readme.md

and next time with the link ...

readme.md

@@ -120,7 +120,7 @@ The *falsehood* articles listed below will have a comprehensive list of those fa
 - [I Knew How to Validate an Email Address Until I Read the RFC](https://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx/) - Provides intricate examples that are unsuspected valid email addresses according the RFC-822.
 - [So you think you can validate email addresses (FOSDEM 2018)](https://fosdem.org/2018/schedule/event/email_address_quiz/) - Presentation of edge-case email addresses and why you should not use regex to parse them.
 - [Your E-Mail Validation Logic is Wrong](https://www.netmeister.org/blog/email.html) - A summary of the various, surprising things that are allowed in an email address.
-- [`libvldmail`] - A library that implements RFC-based checks for e-mail addresses.
+- [`libvldmail`](https://github.com/dertuxmalwieder/libvldmail) - A library that implements RFC-based checks for e-mail addresses.
 
 ## Geography