Provide publicly accessible link to charter in top-level README.md #11
Description
The charter link on the GitHub landing page of this TC repository is not publicly accessible.
Suggest we rplace that link (requires login and thus OASIS account):
with the publicly accessible link (as noted on the TC page at groups.oasis-open.org):
https://docs.google.com/document/d/182sp0a6cb4MiqX9A9S7qSBM4w7HKS-SsBrPKHmsb8iQ/
or even better use the direct link to a PDF:
https://docs.google.com/document/d/182sp0a6cb4MiqX9A9S7qSBM4w7HKS-SsBrPKHmsb8iQ/export?format=pdf