fix: update READMEs for shields.io badge change

[kyle-johnson]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: d181355

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
abortcontroller-chain	Patch
abortcontroller-deadline	Patch

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[codecov-commenter]

Codecov Report

Merging #233 (d181355) into main (15ef90c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #233   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines           27        27           
  Branches         6         6           
=========================================
  Hits            27        27           

Flag	Coverage Δ
chain	100.00% <ø> (ø)
deadline	100.00% <ø> (ø)

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