wrong id in div

Author: crotwell

docs/tutorial/index.html

@@ -56,7 +56,7 @@ <h5>See it live in <a href="tutorial1.html" target="_blank">tutorial1.html</a>.<
   &lt;body>
     &lt;h3>Tutorial 1: Sine Wave&lt;/h3>
     &lt;h3>A Seismograph!&lt;/h3>
-    &lt;div class="seismograph" id="myseismograph">
+    &lt;div class="seismograph" id="sinewave">
     &lt;/div>
 
     &lt;script src="https://www.seis.sc.edu/downloads/seisplotjs/seisplotjs_2.0.1_standalone.js">&lt;/script>