Update index.html

Author: cicirello

docs/index.html

@@ -179,7 +179,7 @@ <h3>How to Cite</h3>
 </section>
 <section>
 <h3>Importing from Maven Central</h3>
-<div class="badge-height"><a href="https://search.maven.org/artifact/org.cicirello/jpt"><amp-img class="contain" layout="fill" alt="Latest release on Maven Central" src="https://img.shields.io/maven-central/v/org.cicirello/jpt.svg?label=Maven%20Central"></amp-img></a></div>
+<div class="badge-height"><a href="https://search.maven.org/artifact/org.cicirello/jpt"><amp-img class="contain" layout="fill" alt="Latest release on Maven Central" src="https://img.shields.io/maven-central/v/org.cicirello/jpt.svg?label=Maven%20Central&logo=apachemaven"></amp-img></a></div>
 <p>To import JPT from the Maven Central repository (if your build tool is
 Maven), add the following to the dependencies section of 
 your &ldquo;pom.xml&rdquo; (for other build tools, see the tool's documentation