chore: update-contributing-guidelines

[ryanbas21]

JIRA Ticket

https://pingidentity.atlassian.net/browse/SDKS-3970

Description

Small updates to how to contribute to the repo, which already existed. just made it more clear from the root README file

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7a9f206

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[nx-cloud]

View your CI Pipeline Execution ↗ for commit 7a9f206.

Command	Status	Duration	Result
nx affected -t build typecheck lint test e2e-ci	✅ Succeeded	1m 33s	View ↗
nx-cloud record -- nx format:check	✅ Succeeded	1s	View ↗

---

☁️ Nx Cloud last updated this comment at 2025-05-21 17:39:25 UTC

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.55%. Comparing base (8d50e40) to head (7a9f206).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #302   +/-   ##
=======================================
  Coverage   50.55%   50.55%           
=======================================
  Files          29       29           
  Lines        1626     1626           
  Branches      196      196           
=======================================
  Hits          822      822           
  Misses        804      804           

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[github-actions]

Deployed 871def3 to https://ForgeRock.github.io/ping-javascript-sdk/pr-302/871def3ac59b26f1c49e4b74b4b23b693ffbd756 branch gh-pages in ForgeRock/ping-javascript-sdk