all: update repository url

For the upcoming rename of security org to rosa.

Signed-off-by: Ophestra <cat@gensokyo.uk>

static/install.html

@@ -36,9 +36,9 @@
 
             <p>Hakurei can be installed to almost any Linux-based operating system by running
             <code>install.sh</code> from a release tarball found <a
-            href="https://git.gensokyo.uk/security/hakurei/releases" target="_blank">here</a>.
+            href="https://git.gensokyo.uk/rosa/hakurei/releases" target="_blank">here</a>.
             With that said, the current easiest method for using Hakurei with desktop apps would be
-            via the <a href="https://git.gensokyo.uk/security/hakurei/src/branch/master/options.md"
+            via the <a href="https://git.gensokyo.uk/rosa/hakurei/src/branch/master/options.md"
             target="_blank">companion NixOS module</a>.</p>
 
             <p>We strongly recommend using one of the official installation methods. Third party