add sdr_transceiver_emb to apps/index.html
<li><a href="sdr_transceiver">SDR transceiver</a></li>
<li><a href="sdr_transceiver_hpsdr">SDR transceiver compatible with HPSDR</a></li>
<li><a href="sdr_receiver_hpsdr">SDR receiver compatible with HPSDR</a></li>
+<li><a href="sdr_transceiver_emb">Embedded SDR transceiver</a></li>
<li><a href="sdr_transceiver_wide">Wideband SDR transceiver</a></li>
<li><a href="sdr_transceiver_wspr">Multiband WSPR transceiver</a></li>
<li><a href="mcpha">Multichannel Pulse Height Analyzer</a></li>
