Corrected the release where the DEMO was tested on

Author: Andreas Apostolatos

README.md

@@ -3,7 +3,7 @@
 [![View Courseware on Finite Element Methods on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://www.mathworks.com/matlabcentral/fileexchange/125135-courseware-on-finite-element-methods) or [![Open in MATLAB Online](https://www.mathworks.com/images/responsive/global/open-in-matlab-online.svg)](https://matlab.mathworks.com/open/github/v1?repo=MathWorks-Teaching-Resources/Courseware-on-Finite-Element-Methods&project=CoursewareonFiniteElementMethods.prj)
 
 **Curriculum Module**  
-_Created with R2021b. Compatible with R2021b and later releases._  
+_Created with R2022b. Compatible with R2022b and later releases._  
 
 ## Description ##