docs(app): remove CDC link

docs/User-instructions.html

@@ -604,7 +604,7 @@ <h2 id="learn-about-genetics">III. Learn About Genetics</h2>
 
 <p>For more information on Genetics:</p>
 <ul>
-    <li><span style="font-weight: bold;">Information from the CDC</span> (the U.S. Centers for Disease Control and Prevention): <a href="https://www.cdc.gov/genomics-and-health/about/index.html">https://www.cdc.gov/genomics-and-health/about/index.html</a></li>
+    <!-- <li><span style="font-weight: bold;">Information from the CDC</span> (the U.S. Centers for Disease Control and Prevention): <a href="https://www.cdc.gov/genomics-and-health/about/index.html">https://www.cdc.gov/genomics-and-health/about/index.html</a></li> -->
     <li><span style="font-weight: bold;">Genetics on OLogy</span> (a science website in easy language from the American Museum of Natural History): <a href="https://www.amnh.org/explore/ology/genetics/what-is-genetics">https://www.amnh.org/explore/ology/genetics/what-is-genetics</a></li>
     <li><span style="font-weight: bold;">Information from Genes and Health</span> (resources by the study team of one of the world’s largest community-based genetics studies)<a href="https://www.genesandhealth.org/genes-your-health/genes-made-easy">https://www.genesandhealth.org/genes-your-health/genes-made-easy</a></li>
 </ul>