feat: Update contributing.md to include local tests

[onasser1]

What this PR does / why we need it:
Encourage new contributors to do local tests before pushing changes
How does this change affect the cardinality of KSM: (increases, decreases or does not change cardinality)
N/A
Which issue(s) this PR fixes: (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged)
Fixes #2743

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[assu-2000]

What this PR does / why we need it: Encourage new contributors to do local tests before pushing changes How does this change affect the cardinality of KSM: (increases, decreases or does not change cardinality) N/A Which issue(s) this PR fixes: (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged) Fixes #2743

please consider correcting the small typo on line 43 before review. Should be We recommend you not We you recommend

[onasser1]

Thanks for this suggestion. fixed

[richabanker]

Suggested change

	You need first to validate your modules:
	You need to first validate your modules:

[onasser1]

Thanks. fixed 👍🏻

[richabanker]

/lgtm

cc @CatherineF-dev to verify

[richabanker]

/hold

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: onasser1, richabanker
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[k8s-ci-robot]

New changes are detected. LGTM label has been removed.

[onasser1]

/assign