Update List of Released Courses

Signed-off-by: Mike Bauer <[email protected]>

Author: MikeBauerCA

README.md

@@ -10,9 +10,9 @@ This project is a set of training materials and labs for COBOL on z/OS. The foll
 - Released
     - [COBOL Programming Course #1 - Getting Started](COBOL%20Programming%20Course%20%231%20-%20Getting%20Started/README.md)
     - [COBOL Programming Course #2 - Learning COBOL](COBOL%20Programming%20Course%20%232%20-%20Learning%20COBOL/README.md)
+    - [COBOL Programming Course #3 - Advanced Topics](COBOL%20Programming%20Course%20%233%20-%20Advanced%20Topics/README.md)
 
 - Incubation
-    - [COBOL Programming Course #3 - Advanced Topics](COBOL%20Programming%20Course%20%233%20-%20Advanced%20Topics/README.md)
     - [COBOL Programming Course #4 - Testing](COBOL%20Programming%20Course%20%234%20-%20Testing/README.md)
 
 If you run into any issues, please don't hesitate to reach out on our [Slack channel](https://openmainframeproject.slack.com/archives/C011NE32Z1T).