docs: use context.TODO() in README examples

[sahidvelji]

This PR

By convention, it is a good idea to use context.TODO() in examples instead of context.Background() in example code to indicate to the reader that these should be updated.

Related Issues

Notes

https://pkg.go.dev/context#TODO

Follow-up Tasks

How to test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.69%. Comparing base (b169115) to head (f1c69f1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #378   +/-   ##
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  Coverage   85.69%   85.69%           
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  Files          20       20           
  Lines        1447     1447           
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  Hits         1240     1240           
  Misses        186      186           
  Partials       21       21           

Flag	Coverage Δ
e2e	85.69% <ø> (ø)
unit	85.69% <ø> (ø)

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[beeme1mr]

Make sense, thanks