[Edit] General: heap sort

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We would like to edit the heap sort term entry in algorithms in general. The entry lives in content/general/concepts/algorithm/terms/heap-sort/heap-sort.md

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

Please:

• Add some more examples along with their proper explanations
• Add Best Practices and/or FAQ sections, its uses

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