Update Copyright in NOTICE and README

[naveentatikonda]

Signed-off-by: Naveen Tatikonda navtat@amazon.com

Description

Updating copyright in NOTICE.txt and README

Issues Resolved

#27

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has documentation added
• Commits are signed as per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov-commenter]

Codecov Report

Merging #31 (0a78c4a) into main (ac7b75b) will not change coverage.
The diff coverage is n/a.

❗ Current head 0a78c4a differs from pull request most recent head d0ae4e8. Consider uploading reports for the commit d0ae4e8 to get more accurate results

@@           Coverage Diff           @@
##             main      #31   +/-   ##
=======================================
  Coverage   67.19%   67.19%           
=======================================
  Files          30       30           
  Lines        1844     1844           
=======================================
  Hits         1239     1239           
  Misses        499      499           
  Partials      106      106           

Flag	Coverage Δ
opensearch-cli	67.19% <ø> (ø)

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