docs: updated year in copyright notice

Author: dreamorosi

mkdocs.yml

@@ -64,7 +64,7 @@ markdown_extensions:
   - pymdownx.inlinehilite
   - pymdownx.superfences
 
-copyright: Copyright © 2021 Amazon Web Services
+copyright: Copyright © 2022 Amazon Web Services
 
 plugins:
   - git-revision-date