Fix index.md structure to match home layout template

The issue was a mismatch between index.md content and the home.html layout.
The layout template contains all the HTML structure and Jekyll templating,
so index.md should only contain front matter. This resolves the GitHub Pages
404 by ensuring proper template rendering.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: SteveMacenski

CNAME

@@ -0,0 +1 @@
+api.nav2.org

index.md

@@ -1,44 +1,4 @@
 ---
 layout: home
 title: "Nav2 API Docs"
----
-
-# Nav2 API Docs
-
-Welcome to the C++ developer-friendly Nav2 API documentation. This site provides comprehensive Doxygen-generated documentation for multiple Nav2 distributions because I (Your Friendly Neighborhood Navigator) find the new format utterly unreadable and I needed a new solution before my total descent into madness.
-
-## Available Distributions
-
-### Nav2 API Documentation
-
-<div class="distribution-grid">
-  {% assign sorted_nav2_distributions = site.nav2_distributions | sort: 'order' %}
-  {% for dist in sorted_nav2_distributions %}
-  <div class="distribution-card nav2-card">
-    <h3><a href="/nav2-{{ dist.slug }}/html/index.html">{{ dist.title }}</a></h3>
-    <p>{{ dist.description }}</p>
-    <p><strong>Status:</strong> {{ dist.status }}</p>
-  </div>
-  {% endfor %}
-</div>
-
-### ROS 2 API Documentation
-
-<div class="distribution-grid">
-  {% assign sorted_distributions = site.distributions | sort: 'order' %}
-  {% for dist in sorted_distributions %}
-  <div class="distribution-card">
-    <h3><a href="/{{ dist.slug }}/html/index.html">{{ dist.title }}</a></h3>
-    <p>{{ dist.description }}</p>
-    <p><strong>Status:</strong> {{ dist.status }}</p>
-  </div>
-  {% endfor %}
-</div>
-
-## Resources
-
-- [ROS 2 Official Documentation](https://docs.ros.org/)
-- [Rclcpp GitHub Repository](https://github.com/ros2/rclcpp)
-- [Nav2 GitHub Repository](https://github.com/ros-navigation/navigation2)
-- [Nav2 Project](https://nav2.org/)
-- [Nav2 Docs](https://docs.nav2.org/)
+---