Another blog fix

Author: pgleeson

repositories.html

@@ -124,7 +124,7 @@ <h1>Repositories</h1>
 			<div class="container">
 				<ul class="footer-links">
 					<li>
-						<a href="http://blog.openworm.org">Blog</a>
+						<a href="https://openworm.tumblr.com">Blog</a>
 					</li>
 					<li class="muted">
 						&middot;