adding required property 'published' to protocols.configure example

[angiejones]

without the published property on a protocol definition, the following error occurs:

Error: /descriptor/definition: must have required property 'published'

[codecov]

Codecov Report

Merging #218 (19579f3) into main (7ff1747) will not change coverage.
Report is 19 commits behind head on main.
The diff coverage is n/a.

❗ Current head 19579f3 differs from pull request most recent head 610d93b. Consider uploading reports for the commit 610d93b to get more accurate results

@@           Coverage Diff           @@
##             main     #218   +/-   ##
=======================================
  Coverage   89.53%   89.53%           
=======================================
  Files          67       67           
  Lines       12828    12828           
  Branches     1238     1238           
=======================================
  Hits        11486    11486           
  Misses       1319     1319           
  Partials       23       23           

Components	Coverage Δ
api	94.32% <ø> (ø)
common	95.00% <ø> (ø)
credentials	92.77% <ø> (ø)
crypto	94.87% <ø> (ø)
dids	92.16% <ø> (ø)
agent	87.80% <ø> (ø)
identity-agent	59.05% <ø> (ø)
proxy-agent	58.59% <ø> (ø)
user-agent	57.36% <ø> (ø)

[frankhinek]

Added change to the packages/api/README.md to keep the files in sync but otherwise LGTM