update CDK version to 2.11 in download link and dependency section

Author: uli-f

src/index.html

@@ -97,7 +97,7 @@ <h2>Chemistry Development Kit</h2>
          <br><br>
         </span>
         <a target="download" class="scroll btn mx-2 btn-outline-warning btn-white">
-         <i class="fa fa-download"></i> Download v2.10
+         <i class="fa fa-download"></i> Download v2.11
         </a>
       </p>
     </div>
@@ -251,7 +251,7 @@ <h2 id="download" class="text-center text-primary">Download</h2>
               &lt;dependency&gt;
                 &lt;groupId&gt;org.openscience.cdk&lt;/groupId&gt;
                 &lt;artifactId&gt;cdk-bundle&lt;/artifactId&gt;
-                &lt;version&gt;2.10&lt;/version&gt;
+                &lt;version&gt;2.11&lt;/version&gt;
               &lt;/dependency&gt;
             </pre>
             <br>