[No QA] Docs updates for E/A#90002 Document GPS Edit stop trimming feature

[MelvinBot]

Explanation of Change

Documents the new Edit stop feature added to the GPS Distance expense flow in #90002.

After a user taps Stop on a GPS trip, a pencil Edit icon now appears next to the distance counter. Tapping it opens the Edit stop screen, where the user drags a slider to trim the trip back to an earlier stop point along the recorded route. The map route and Total distance update live, and tapping Save returns to the GPS screen with the trimmed distance and updated end address.

Changes to docs/articles/new-expensify/reports-and-expenses/Distance-Expenses.md

• Added a step to How to create a GPS Distance expense (Mobile only) covering the Edit stop screen and slider-based trimming.
• Added a FAQ entry: Can I shorten a GPS trip after I stop tracking?
• Updated the frontmatter keywords with the new feature terms (edit stop, trim trip, edit GPS trip, etc.).

All UI labels (Edit, Edit stop, Total distance, Save, Resume, Stop) were verified against the strings added in the source PR (src/languages/en.ts and IOURequestStepGPSTripEdit) and follow the HELPSITE_NAMING_CONVENTIONS and HELP_AUTHORING_GUIDELINES (Sentence case, bold UI elements, task-based headings).

Related PR

• [GPS] Add stop address editing #90002 — [GPS] Add stop address editing

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@GCyganek, please review the files changed and confirm they reflect the current behavior. Then post a new comment saying @MelvinBot mark this PR as ready for review.

[OSBotify]

A preview of your ExpensifyHelp changes have been deployed to https://d964ffc1.helpdot.pages.dev ⚡️

Updated articles:

• articles/new-expensify/reports-and-expenses/Distance-Expenses