Updated README example outputs for primary req annotations

[richafrank]

I was excited for #1058 and noticed the README was now out of date, so I re-ran all the examples and captured their outputs.

Changelog-friendly one-liner: Updated README example outputs for primary req annotations

Contributor checklist

• Provided the tests for the changes.
• Gave a clear one-line description in the PR (that the maintainers can add to CHANGELOG.md on release).
• Assign the PR to an existing or new milestone for the target version (following Semantic Versioning).

[codecov]

Codecov Report

Merging #1072 into master will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1072      +/-   ##
==========================================
+ Coverage   99.47%   99.51%   +0.04%     
==========================================
  Files          34       34              
  Lines        2476     2476              
  Branches      312      312              
==========================================
+ Hits         2463     2464       +1     
  Misses          6        6              
+ Partials        7        6       -1     

Impacted Files	Coverage Δ
piptools/repositories/pypi.py	95.65% <0.00%> (+0.48%)	⬆️

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[atugushev]

LGTM 👍 Thanks for noticing!

[atugushev]

Perfect! Thanks @richafrank 🙏