[Term Entry] Kotlin Arrays slice

[codecademy-gh-api]

Reason/inspiration (optional)

We would like a new term entry on the s;ice under the 'Arraysconcept on Koltin. The entry should go in a new file undercontent/kotlin/concepts/arrays/terms/slice/slice.md`.

The entry should include:

• An introduction to the term
• A Syntax section that provides the syntax for the concept (if applicable)
• An Example section that provides an example demonstrating the concept in use (if applicable)

Please refer to the concept entry template, content standards and markdown style guide when working on the PR for this issue.

Entry Type (select all that apply)

New Term for Existing Concept Entry

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