docs: fixed minor typo

[JoshBoehm]

Description

Changed "Codde" -> "Code" in the contributing docs

Related Issue

Seems like overkill to do this for this particular change, but I can create one if really needed.

Motivation and Context

Small typo in docs - the word code will be spelled correctly

How Has This Been Tested?

N/A - docs only change

Screenshots (if appropriate): N/A

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.