UI: Add contact/bug-report note under PLUMED update

ambermdflow/html/index.html

@@ -56,6 +56,10 @@
                     <p class="card-description" style="margin-bottom: 0.5rem; padding: 0.5rem 0.75rem; background: #e8f4fd; border-left: 4px solid #007bff; border-radius: 4px; font-size: 0.95rem;">
                         <i class="fas fa-info-circle"></i> <strong>Update:</strong> PLUMED section is fixed — saving <code>plumed.dat</code> and generating/previewing simulation files now work correctly.
                     </p>
+                    <p style="font-size: 0.85rem; color: #555; margin: 0 0 0.5rem 0.1rem;">
+                        If you find any bug or issue, please contact <a href="mailto:hn533621@ohio.edu">hn533621@ohio.edu</a> or open an issue on the
+                        <a href="https://github.com/nagarh/AmberMDFlow" target="_blank" rel="noopener noreferrer">AmberMDFlow GitHub repository</a>.
+                    </p>
                     <div class="input-methods">
                         <div class="method-option">
                             <h3><i class="fas fa-file-upload"></i> Upload PDB File</h3>