[WIP] (docs): update `docs/performance/reduce-reconcilation.md`

[vladdoster]

Summary of changes:

• correct spelling
• increase readability

Checklist before submitting:

• [ ] Added entry to CHANGELOG.md
• [x] Added/updated relevant tests
• [x] Added/updated documentation

[unix-system]

You should mark this as a draft if you don't want it to be reviewed yet 😛

[github-actions[bot]]

CLA Signature Action:

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you read and sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just by adding a comment to this pull request with this exact sentence:

I have read the CLA Document and I hereby sign the CLA

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0 out of 1 committers have signed the CLA. :x: @vladdoster

[coveralls]

Coverage remained the same at 94.787% when pulling ca77425198b7217d8ef7f5c77c7bb8919882a2e0 on vladdoster:patch-1 into 0f26436491830f2f7ed1a24c435c7bdb96b4975f on Roblox:master.

[matthargett]

Hi Vlad! Can you follow the CLA workflow?