docs: fix typos, doubled words, and grammar across pages

[DeepDiver1975]

Summary

A copy-editing pass over the documentation prose, fixing spelling, typos, doubled words, and a few small grammar/clarity issues. No content meaning or markup-behavior changes.

Typos / spelling

• index.adoc — "Compatiblility" → "Compatibility"
• using.adoc — "availabe" → "available"; "syncronization" → "synchronization"; "resoures" → "resources"; image alt-text "Synbol" → "Symbol" (×4) and "Ingnored" → "Ignored" (×2)
• installing.adoc — image alt-text "Start Menue" → "Start Menu" (×2)
• troubleshooting.adoc — "synchroinize" → "synchronize"; image alt-text "CLog files to keep" → "Log files to keep" (×2)
• filenames.adoc — wrong character can´t (acute accent) → can't
• vfs.adoc — "synchrinozation.." → "synchronization."; "Placehholder" → "Placeholder" (×3)
• removing.adoc — "opperating" → "operating"

Doubled words / grammar

• using.adoc — "a paused sync operations" → "operation"
• installing.adoc — "Now, the the Desktop.ini" → "Now, the Desktop.ini"
• troubleshooting.adoc — "retained across restarts of the Desktop App restarts." → drop trailing "restarts"
• filenames.adoc — "indicating that indicates that the file" → "indicating that the file"
• web_app.adoc — "The the backend, needs to" → "The backend needs to"
• automatic_updater.adoc — "macOS Linux users" → "macOS and Linux users"

Minor clarity / consistency

• conflicts.adoc — "Desktop app" → "Desktop App" (consistency)
• vfs.adoc — parenthesize the file-statuses list; drop a duplicated "for more details"
• faq.adoc — tighten "changes the mtime of the files" → "changes their modification times"
• filenames.adoc — reword "put on top of this document to highlight"; "likely to get problems" → "likely to cause problems"

Notes

These were verified against the rendered prose; American/British spelling mixing (e.g. "Synchronisation"/"behaviour") was left intentionally untouched as it is used consistently in the project. A companion PR will port these fixes to the 7.1 branch.

🤖 Generated with Claude Code

[DeepDiver1975]

🤖 Automated review by Claude Code review agent.

Overview

A focused copy-editing pass across 11 AsciiDoc pages: 32 insertions / 32 deletions, purely prose. The changes are well-scoped, accurately summarized in the PR description, and contain no logic or build-config edits. All corrections are genuine and improve the docs. I recommend merging.

This PR targets master and is the companion of PR #730 (same title plus "(7.1)") which targets the 7.1 branch. They are an intentional forward-port/back-port pair, not duplicates — #730 has one extra changed file and one extra insertion, so the branches have drifted slightly and should not simply be assumed identical.

Code quality / style

• All edits are real corrections: misspellings ("Compatiblility", "availabe", "syncronization", "resoures", "synchroinize", "opperating", "Placehholder", "synchrinozation.."), doubled words ("the the", "Desktop App restarts" trailing dup, "indicating that indicates that"), and a wrong glyph (can´t acute accent → can't).
• Image alt-text fixes ("Synbol"→"Symbol", "Ingnored"→"Ignored", "Start Menue"→"Start Menu", "CLog files"→"Log files") touch only the bracketed alt text; image targets/paths are untouched, so rendering is unaffected.
• AsciiDoc markup is preserved throughout: attribute references ({ini_name}, {description}), ifeval/endif blocks, menu:/btn: macros, image:/image::, and the xref:troubleshooting.adoc#error-updating-metadata-access-denied[...] cross-reference all remain syntactically intact.
• Terminology consistency is improved: conflicts.adoc "Desktop app" → "Desktop App" matches the capitalization used elsewhere. (Note: using.adoc and web_app.adoc still contain other lowercase "Desktop app" instances not touched here — out of scope, just noting for a future pass.)
• British/American spelling (e.g. "Synchronisation", "behaviour") left untouched as stated; this is the right call given the project mixes them consistently.

Specific suggestions

• vfs.adoc: "synchrinozation.." → "synchronization." correctly fixes both the typo and the doubled period. Good.
• filenames.adoc: "The following examples are put on top of this document to highlight..." → "The following examples illustrate..." is a clear improvement; the original phrasing was awkward and the new version reads naturally.
• faq.adoc: "changes the mtime of the files" → "changes their modification times" — reads better, though note the page still uses the term "mtime" earlier (defined as "modification date/time (mtime)"), so the terminology shift here is minor and acceptable.
• No action required, but if a follow-up is desired, the remaining lowercase "Desktop app" occurrences noted above could be normalized.

Potential issues / risks

• None functional. Alt-text-only changes carry no rendering risk.
• Trailing whitespace: several edited lines in filenames.adoc and using.adoc still end with a trailing space (pre-existing, not introduced by this PR). Not blocking.
• Coordination risk: ensure #729 (master) and #730 (7.1) stay in sync; since the diffs already differ by one file, double-check no master-only fix was dropped from 7.1 or vice versa before both land.

Overall: clean, low-risk, and clearly beneficial. LGTM.