readme updated with new instructions for installing the helm chart

[rustyShacklefurd]

Readme update to use the helm repo instead of the existing helm-charts directory. Helm repo allows for multiple versions to be stored.

[Nana-EC]

LG

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov-commenter]

Codecov Report

Merging #353 (f0e569e) into main (30634b4) will not change coverage.
The diff coverage is n/a.

❗ Current head f0e569e differs from pull request most recent head 900d59e. Consider uploading reports for the commit 900d59e to get more accurate results

@@           Coverage Diff           @@
##             main     #353   +/-   ##
=======================================
  Coverage   62.35%   62.35%           
=======================================
  Files           9        9           
  Lines         874      874           
  Branches      143      143           
=======================================
  Hits          545      545           
  Misses        291      291           
  Partials       38       38           

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