Change docs links to actual file extension (.md)

See https://gerrit-review.googlesource.com/83950 for detailed context.

Change-Id: I61c3d092c3420d0bf8664fffccb4d6295881eaac
1 file changed
tree: 8800edc59f708267093a148b7aab85d895ed9f2b
  1. .buckconfig
  2. .gitignore
  3. .settings/
  4. BUCK
  5. LICENSE
  6. VERSION
  7. lib/
  8. src/