I implemented HTTPS on all the webpages of my website. My browser tells me it's a "Secure connection" with a green signal. I double-checked that all the images, CSS files, JS files, etc. were HTTPS, and I think it's everything ok.
However, I'm still using the following pre-head code:
<!doctype html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
Should I change this two HTTP calls from 'http' to 'https'?