Remove 64 character Let's Encrypt limitation (#3876)

Author: AnouckColson

Diff for: themes/psh-docs/layouts/shortcodes/lets_encrypt_limitations.md

@@ -1,5 +1,5 @@
 <!-- shortcode start {{ .Name }} -->
-Let's Encrypt allows a maximum of 100 hostnames per certificate and 64 characters per hostname.
+Let's Encrypt allows a maximum of 100 hostnames per certificate.
 You can have 1 Let's Encrypt certificate for each of your environments.
 If you define both a `{default}` and a `www.{default}` route for each domain you use,
 you can add up to 50 hostnames.