Update extension documentation

This is a follow-up to change I1cd258e3a861236a0e1913076f222d7521830976.

Bug: 111381617
Test: N/A
Change-Id: Ie26c7dc98b54e24ae4ef6ff576440f70d0ee3fb8
Merged-In: Ie26c7dc98b54e24ae4ef6ff576440f70d0ee3fb8
(cherry picked from commit bf07eca4a9b5801e29ba3a716ddd60c3115b9882)
2 files changed
tree: 49cbddb8a99b0a2256535bf0a17a066e00e6d834
  1. nn/
  2. .clang-format
  3. CleanSpec.mk
  4. OWNERS
  5. PREUPLOAD.cfg