Chore: (Docs) Minor updates to docs and snippets

[jonniebigodes]

With this pull request the documentation is updated to provide a better UX when a user tries to copy the snippets in our documentation, leading them to copy over unwanted portions of the commands.

Closes #17594

What was done:

• Updated the sections in the documentation that required the most attention.
• Added the required snippets.
• Left out the framework-specific install instructions files and install issues as to avoid adding misconceptions around the commands (npx sb init vs npx storybook init)

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[jonniebigodes]

Self merging this