Remove NVC reference from TEND description

Makes description more accessible to users unfamiliar with NVC

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

static/index.html

@@ -824,7 +824,7 @@
 
                 <div class="tool-desc tend-desc" onclick="showToolInfo('tend')">
                     <h4>TEND</h4>
-                    <p>Transform your message with NVC clarity and warmth. Preserves your authentic voice.</p>
+                    <p>Transform your message with clarity and warmth. Preserves your authentic voice.</p>
                 </div>
 
                 <div class="tool-desc" onclick="showToolInfo('nvc')">