Minor copyedits only to accompany some of the changes made per the task list below
Updates (task list taken from #148) made in this PR:
[ ] Demote all headings one level, except for the page title
[ ] Code quote all example.com references
[ ] Add Hugo front matter
[ ] Remove Copyright notice at the end of the spec page -- the repo has a LICENSE file, and when published on the OTel website, each page has a copyright notice.
Updates (task list taken from #148) made in this PR:
example.com
referencesLocal repo preview: https://github.com/open-telemetry/opamp-spec/blob/9ba5f927bec431e8997d0cdc6e406bd82740cd31/specification.md
/cc @tigrannajaryan @svrnm @cartermp