DOCSP-41659: small typo fix

[osharaf-mdb]

Pull Request Info

Jira ticket: https://jira.mongodb.org/browse/DOCSP-41659

• Counters - Node.js: fixed a small typo

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Release Notes

• Node.js SDK
  • Model Data/Data Types/Counters: Fix typos on the Node.js SDK Counters page.

Review Guidelines

REVIEWING.md

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[github-actions]

Readability for Commit Hash: 9bb525a

You can see any previous Readability scores (if they exist) by looking
at the comment's history.

Readability scores for changed documents:

• source/sdk/node/model-data/data-types/counters: Grade Level: 8.2, Reading Ease: 58.79

For Grade Level, aim for 8 or below.

For Reading Ease scores, aim for 60 or above:

Score	Difficulty
90-100	Very Easy
80-89	Easy
70-79	Fairly Easy
60-69	Medium
50-59	Fairly Hard
30-49	Hard
0-29	Very Hard

For help improving readability, try Hemingway App.

[dacharyc]

LGTM!

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