Update VNC link to use RealVNC protocol

Changed vnc:// to com.realvnc.vncviewer.connect:// for proper
RealVNC Viewer integration.

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

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

displaypc.asp

@@ -371,7 +371,7 @@ If hostnameVal <> "N/A" And hostnameVal <> "" Then
 End If
 
 If hasVncEnabled And vncHostname <> "" Then
-    Response.Write("<p class='mb-2'><a href='vnc://" & Server.HTMLEncode(vncHostname) & "' title='Connect via VNC'>" & Server.HTMLEncode(vncHostname) & "</a></p>")
+    Response.Write("<p class='mb-2'><a href='com.realvnc.vncviewer.connect://" & Server.HTMLEncode(vncHostname) & "' title='Connect via VNC'>" & Server.HTMLEncode(vncHostname) & "</a></p>")
 ElseIf hasVncEnabled Then
     Response.Write("<p class='mb-2'><span class='text-muted'>VNC Enabled (No hostname)</span></p>")
 Else