smpte_sinewave should not end in .wav

index.html

@@ -1856,7 +1856,7 @@ <h3>SMPTE bars + Sine wave audio</h3>
         <dt>-c:a pcm_s16le</dt><dd>encodes the audio codec in <code>pcm_s16le</code> (the default encoding for wav files). <code>pcm</code> represents pulse-code modulation format (raw bytes), <code>16</code> means 16 bits per sample, and <code>le</code> means "little endian"</dd>
         <dt>-t 10</dt><dd>specifies recording time of 10 seconds</dd>
         <dt>-c:v ffv1</dt><dd>Encodes to <a href="https://en.wikipedia.org/wiki/FFV1" target="_blank">FFV1</a>. Alter this setting to set your desired codec.</dd>
-        <dt><i>output_file</i>.wav</dt><dd>path, name and extension of the output file</dd>
+        <dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd>
       </dl>
       <p class="link"></p>
     </div>