Rough draft of API course article

Author: jpipkin1

docs/api/about-apis/index.md

@@ -17,6 +17,12 @@ This section contains articles about how to use the Sumo Logic APIs.
   <p>Get your API credentials and endpoint URL to start using the Sumo Logic APIs.</p>
   </div>
 </div>
+<div className="box smallbox card">
+  <div className="container">
+  <a href="/docs/api/about-apis/intro-to-apis"><img src={useBaseUrl('img/icons/operations/advanced-certificates.png')} alt="Thumbnail icon" width="50"/><h4>Introduction to Sumo Logic APIs</h4></a>
+  <p>Learn how to get started with the Sumo Logic APIs</p>
+  </div>
+</div>
 <div className="box smallbox card">
   <div className="container">
   <a href="/docs/api/about-apis/troubleshooting"><img src={useBaseUrl('img/icons/operations/troubleshoot.png')} alt="Thumbnail icon" width="50"/><h4>Troubleshooting</h4></a>

docs/api/about-apis/intro-to-apis.md

@@ -3090,6 +3090,7 @@ integrations: [
           link: {type: 'doc', id: 'api/about-apis/index'},
           items: [
             'api/about-apis/getting-started',
+            'api/about-apis/intro-to-apis',
             'api/about-apis/troubleshooting',
           ],
         },