fix: docsのリリースバージョンを0.2.2から0.2.9に更新

Author: shima004

docs/source/conf.py

@@ -14,7 +14,7 @@
 project = "adf-core-python"
 copyright = "2024, Haruki Uehara, Yuki Shimada"
 author = "Haruki Uehara, Yuki Shimada"
-release = "0.2.2"
+release = "0.2.9"
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration