fixed link to contributing.md

[M0nica]

The contributing.md link was linking to an outdated location. Updated to reflect its current location so that the link works.

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✅️ By submitting this PR, I have verified the following

Guidelines

Content

If adding new advice or content,

• A tool like Grammarly was utilized to check for spelling and grammar.

Resources

If adding a new resource,

• There is a link to the resource.
• There is a description describing what benefits the resource offers.

Formatting

• No whitespace.
• Spaces, not tabs. Specifically, 2 spaces.
• Make sure items in lists are alphabetized.

Adding yourself as a contributor.

• [z] Added my name to the bottom of the list under the Credits section in the README.md with a link to my website or GitHub profile 👥️

[FrancesCoronel]

Thanks again, Monica - really appreciate the fix! ☺️