Update README.md - testing GH workflow

[srprash]

Issue #, if available:

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #1 (d69cea3) into gh_actions_unit_tests (e10e36c) will decrease coverage by 0.06%.
The diff coverage is n/a.

@@                    Coverage Diff                    @@
##           gh_actions_unit_tests       #1      +/-   ##
=========================================================
- Coverage                  79.36%   79.29%   -0.07%     
=========================================================
  Files                         80       80              
  Lines                       3159     3159              
=========================================================
- Hits                        2507     2505       -2     
- Misses                       652      654       +2     

Impacted Files	Coverage Δ
aws_xray_sdk/core/sampling/local/reservoir.py	88.88% <0.00%> (-11.12%)	⬇️

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