AIDEGen: Correct docstring info and method name.

Correct the wrong docstring info and refine method name of
module_info.py and module_info_util.py.

Bug: 132840248
Test: $ atest aidegen_unittests --host should get PASS result
Change-Id: I92b951e3bcd9ab83093ba638faeeb2032c255a55
2 files changed