EDU-13639: Update updating-the-core-package-version.mdx

[mariana-caetano]

Types of changes

• New content (guides, endpoints, app documentation)
• Improvement (make a documentation even better)
• Fix (fix a documentation error)
• Spelling and grammar accuracy (self-explanatory)

Now that we update the FastStore project according to the faststore/cli package, this PR changes the instructions from updating faststore/core to fatstore/cli. Reference: EDU-13639.

• Updates in the sidebar and setting the redirect: fix(navigation.json): update FastStore title and slug name (updating-the-cli-package-version) devportal#805

[github-actions]

Navigation Preview Link

No changes detected in the navigation.json file

[github-actions]

Preview Links

Open this URL to set up the portal with this branch changes.

You can now access the edited pages with the following URLs:

• Couldn't find the corresponding page for docs/faststore/docs/reference/project-structure/updating-the-cli-package-version.mdx. Have you added updating-the-cli-package-version to the navigation.json file? Maybe you can find it in https://developers.vtex.com/docs/guides/faststore/project-structure-updating-the-cli-package-version