Update magloop.html

magloop.html

@@ -80,6 +80,7 @@
                 <li>Tx : The transmit power in Watts. This affects the predicted voltage across the capacitor (Vcap), and the RMS loop current (Ia).</li>
                 <li>Metric or Imperial : selects the measuring system.</li>
                 <li>Cu or Al : selects the type of metal conductor (annealed copper or aluminum).</li>
+                <li>Circ, Oct, Hex or Sqr : selects the shape of the magloop.</li>
             </ul>
             <u><b>Calculated parameters:</b></u>
             <ul>