fix: correct stylesheet & docs reference on homepage

Author: theSuess

docs/_index.html

@@ -5,7 +5,7 @@
 +++
 
 {{< blocks/cover title="Welcome to the Grafana Operator documentation" image_anchor="top" height="full" >}}
-<a class="btn btn-lg btn-primary me-3 mb-4" href="/docs/">
+<a class="btn btn-lg btn-primary me-3 mb-4" href="docs/">
   Learn More <i class="fas fa-arrow-alt-circle-right ms-2"></i>
 </a>
 <a class="btn btn-lg btn-secondary me-3 mb-4" href="https://github.com/grafana/grafana-operator/releases">

hugo/assets/scss/_styles_project.scss

@@ -0,0 +1 @@
+@import 'td/code-dark'