Ah, it looks like Jasper left the note on your talkpage, 2 years ago. You should be fine, given that you're not a spambot!
I'm not sure what error you're encountering, exactly, but it might just be "warning" you, and not actually "stopping" you. Please try to save the edit twice. If that doesn't work (i.e. if the filter is actually "stopping" you from saving the edit), come back here and paste what you'd like added, without the "http" s, and I'll add it for you.
I would also strongly recommend removing the direct email link, that you've currently got there (and at English Wikipedia). You've already got it in your Special:Preferences, hence any editor will be able to use the "Email this user" link in the sidebar, to contact you (that link only appears when editors have a verified email address in their preferences). Otherwise, if you leave it as plaintext, spammers are likely to eventually find the plaintext version and add it to their lists.
Hope that helps.
p.s. this new type of discussion page (an extension named Flow) doesn't require signatures. Let me know if you have any feedback about it - it's part of what I'm working on improving. :-)