fix: change 'day' to 'Tuesday' in optimizing docs

[erehulka]

In dependabot optimizing docs (https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/optimizing-pr-creation-version-updates), there is an example, for which the dependabot should run each Tuesday. However, in the explaining text it says that it should run 'every day', which is not correct.

Why:

Closes: #37136

What's being changed (if available, include any code snippets, screenshots, or gifs):

changed every day to every Tuesday, to match the example code block.

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• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

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Pull Request Overview

This PR updates the documentation for Dependabot's version update scheduling by correcting the example description from "every day" to "every Tuesday".

• Updated text in the npm configuration example to specify Tuesday scheduling instead of daily.

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Source	Review	Production	What Changed
code-security/dependabot/dependabot-version-updates/optimizing-pr-creation-version-updates.md	fpt ghec ghes@ 3.16 3.15 3.14 3.13 3.12	fpt ghec ghes@ 3.16 3.15 3.14 3.13 3.12

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[Sharra-writes]

@erehulka Thanks so much for opening a PR with this fix! I'll update the branch and get this merged once tests are passing 🍏

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