fix broken links

Author: tdavidcl

index.html

@@ -49,7 +49,7 @@ <h1 class="hero-title">
                     heterogeneous clusters using MPI.
                 </p>
                 <div class="hero-buttons">
-                    <a href="https://shamrock-code.github.io/Shamrock/mkdocs/usermanual/quickstart/" class="btn btn-primary">
+                    <a href="https://shamrock-code.github.io/Shamrock/sphinx/user_guide/quickstart.html" class="btn btn-primary">
                         <i class="fas fa-rocket"></i> Get Started
                     </a>
                     <a href="#quick-links" class="btn btn-secondary">
@@ -120,21 +120,21 @@ <h2 class="section-title">Performance Records</h2>
     <section id="quick-links" class="quick-links">
         <div class="container">
             <div class="quick-links-grid">
-                <a href="https://shamrock-code.github.io/Shamrock/mkdocs/" class="quick-link-card">
+                <a href="https://shamrock-code.github.io/Shamrock/sphinx/index.html" class="quick-link-card">
                     <i class="fas fa-book"></i>
                     <h3>Main Documentation</h3>
-                    <p>Comprehensive user documentation and guides</p>
-                </a>
-                <a href="https://shamrock-code.github.io/Shamrock/sphinx/index.html" class="quick-link-card">
-                    <i class="fab fa-python"></i>
-                    <h3>Python Module Doc</h3>
-                    <p>Python bindings documentation and examples</p>
+                    <p>Comprehensive user and developer documentation</p>
                 </a>
                 <a href="https://shamrock-code.github.io/Shamrock/sphinx/_as_gen/index.html" class="quick-link-card">
                     <i class="fas fa-code"></i>
                     <h3>Examples</h3>
                     <p>Browse through practical examples and use cases</p>
                 </a>
+                <a href="https://shamrock-code.github.io/Shamrock/sphinx/user_guide.html" class="quick-link-card">
+                    <i class="fas fa-book"></i>
+                    <h3>User Guide</h3>
+                    <p>User guide documentation</p>
+                </a>
                 <a href="https://github.com/Shamrock-code/Shamrock" class="quick-link-card">
                     <i class="fab fa-github"></i>
                     <h3>GitHub Repo</h3>
@@ -209,7 +209,7 @@ <h2 class="section-title">Quick Start</h2>
                     </div>
                     <h3>Ready to Get Started?</h3>
                     <p>Follow our comprehensive quickstart guide to install Shamrock and run your first hydrodynamics simulation. The guide covers installation, device selection, and basic usage patterns.</p>
-                    <a href="https://shamrock-code.github.io/Shamrock/mkdocs/usermanual/quickstart/" class="btn btn-primary">
+                    <a href="https://shamrock-code.github.io/Shamrock/sphinx/user_guide/quickstart.html" class="btn btn-primary">
                         <i class="fas fa-external-link-alt"></i> View Quickstart Guide
                     </a>
                 </div>