v3.5.8
[SPARK-29052][DOCS][ML][PYTHON][CORE][R][SQL][SS] Create a Migration Guide tap in Spark documentation
[SPARK-25584][ML][DOC] datasource for libsvm user guide
[SPARK-11835] Adds a sidebar menu to MLlib's documentation
[SPARK-50514][DOCS] Add `IDENTIFIER clause` page to `menu-sql.yaml`