[MINOR] Copyright mainly

mkdocs.yml

@@ -7,7 +7,7 @@ repo_name: spark-internals
 repo_url: https://github.com/japila-books/apache-spark-internals
 edit_uri: edit/main/docs/
 
-copyright: Copyright © 2023 Jacek Laskowski
+copyright: Copyright © 2023-2024 Jacek Laskowski
 
 theme:
   name: material
@@ -138,7 +138,7 @@ extra:
   tags:
     DeveloperApi: developerapi
 
-# Sections with ... under awesome-pages plugin's control
+# The sections with ... use awesome-pages plugin
 # https://github.com/lukasgeiter/mkdocs-awesome-pages-plugin
 # Review corresponding .pages for setup
 nav: