Add Powered by OmniVoice to synthesis page

index.html

@@ -1046,7 +1046,7 @@ pre {
       <div class="page active" id="page-synthesis">
         <div class="page-header">
           <div class="page-title">Speech Synthesis</div>
-          <div class="page-desc">Select a voice and type your text to generate speech.</div>
+          <div class="page-desc">Select a voice and type your text to generate speech. Powered by OmniVoice.</div>
           <button class="page-api-toggle" type="button" onclick="togglePageApi('synthesis', this)">
             <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="16 18 22 12 16 6"/><polyline points="8 6 2 12 8 18"/></svg>
             <span class="page-api-label">View API</span>