Fix link to CertBot

_data/links.yml

@@ -4,6 +4,6 @@
 - name: "EFF"
   url: "https://www.eff.org"
   desc: "Electronic Frontier Foundation"
-- name: "EFF's Cert Bot"
-  url: "https://www.eff.org"
-  desc: "Electronic Frontier Foundation"
+- name: "EFF's Cert Bot for LetsEncrypt"
+  url: "https://certbot.eff.org"
+  desc: "Free TLS certificates for your web site"