HTTPS link to site

This will set the canonical link to HTTPS (good thing) and HTTP the RSS feed,
diff --git a/_config.yml b/_config.yml
index 3260062..c2a10ae 100644
--- a/_config.yml
+++ b/_config.yml
@@ -11,7 +11,7 @@
   Google's Swift style guide.
 timezone: America/Los_Angeles
 baseurl: "/swift"
-url: "http://google.github.io/swift"
+url: "https://google.github.io/swift"
 
 exclude: [config.ru, Gemfile, Gemfile.lock, Procfile, vendor, README.md]