Fix a few KHR extension links (#89)

They were still pointing to the old txt file.

Signed-off-by: Kevin Petit <kevin.petit@arm.com>
3 files changed
tree: 16fe4de7a2e8239c7f291720e9b4ff4f945f2ae7
  1. CODE_OF_CONDUCT.md
  2. README.adoc
  3. api/
  4. extensions/
  5. index.php
  6. sdk/
  7. specs/