feat(guide): updated modal page for label (#11169)

* feat(guide): updated modal page for label

* feat(guide): updated modal page with modal component sections

* feat(guide): added modal to select menu page

* fix(guide): moved select menu and add text display callout

* feat(guide): reworked to show modal together instead of separately

* feat(guide): added file upload  to modal

* fix: code block focus in modals

* fix: grammar

* fix: grammar and wording

* feat: structure and readability

General improvements to structure and reading flow
* Reword sentence structure
* Use semantic code highlights
* Consistent heading casing
* Add additional explanations and elaborations
* Adapt legacy examples in text
* Omit repeated code for brevity and less scrolling

* fix: updated example Image

* chore: typos, grammar, rephrasing

Co-authored-by: Jiralite <[email protected]>
Co-authored-by: Ryan Munro <[email protected]>

* chore: review rephrasing

Co-authored-by: Jiralite <[email protected]>
Co-authored-by: Ryan Munro <[email protected]>

* chore: rephrasing for correctness

Co-authored-by: Jiralite <[email protected]>

* chore: rephrasing for correctness

* chore: rephrasing for correctness

* chore: formatting

* chore: rephrasing for correctness

Co-authored-by: Jiralite <[email protected]>

* chore: update text

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Co-authored-by: almostSouji <[email protected]>
Co-authored-by: Jiralite <[email protected]>
Co-authored-by: Ryan Munro <[email protected]>

Author: 4 people