docs: normalize legacy server product name to "ownCloud Classic"

[DeepDiver1975]

What

Normalizes the legacy ownCloud server product to its canonical name ownCloud Classic across all user-facing documentation in this repo. Version (10/11) is retained only as trailing information where relevant (e.g. "ownCloud Classic 10").

Normalized: ownCloud Server, owncloud Server, ownCloud Classic Server, and bare ownCloud 10/11.

Why

Part of owncloud/docs#5111 — a coordinated, docs-only rebranding so the legacy product is consistently named ownCloud Classic across the owncloud / owncloud-docker orgs. Reference implementation: owncloud/docs-main#187.

Out of scope (intentionally untouched)

• xref:/include:: targets, module slugs (classic_ui, oc10-app), URLs, attribute names (e.g. oc10-api-url), image paths, anchors
• The new product names: ownCloud Infinite Scale / oCIS

Verification

• All target variants normalized; only prose / headings / link display text changed.
• Every xref/include/URL target byte-for-byte identical before/after.
• oCIS / Infinite Scale occurrence count unchanged.
• No internal xref depends on any heading whose auto-generated anchor changes.

Reviewer checklist

• No xref targets / module slugs / URLs altered
• oCIS / Infinite Scale untouched
• Version shown only as additional info ("ownCloud Classic 10")

🤖 Generated with Claude Code

[DeepDiver1975]

🤖 Automated review by Claude Code review agent.

Verified prose-only product-name normalization ("ownCloud Server" → "ownCloud Classic"). 7 files, 16 lines — the largest of the fleet, checked carefully:

• README.md: prose + Markdown link text only; the GitHub URLs are unchanged.
• index.adoc / web_for_users.adoc / index.adoc(owncloud_web) / nav.adoc: every xref: change touches only the bracketed display text — targets ({latest-server-version}@server:classic_ui:index.adoc, web_with_oc_server.adoc, owncloud_web:web_with_oc_server.adoc) are byte-for-byte unchanged. The image: macro target and {oc-marketplace-url} attribute are untouched.
• web_with_oc_server.adoc: page title (= ...) and :description: attribute are display text; the file is NOT renamed, so no broken inbound xref/alias.
• web-configuration.adoc: a table cell value ("ownCloud Classic address"); the server config key it documents is unchanged.

No :page-aliases:, module slugs, file names, anchors, or code/command literals altered. "Build documentation" + lint checks pass (Antora build is the authoritative xref guard, and it's green). No changelog in this repo (n/a). LGTM.

[DeepDiver1975]

🤖 Automated review by Claude Code review agent.

Re-reviewed the current HEAD (7 files, prose-only) for the legacy server product-name → "ownCloud Classic" normalization.

Verified:

• All edits are display-text/prose only. No xref: targets, file names, module slugs, anchors, image refs, or attribute names altered.
• xref:{latest-server-version}@server:classic_ui:index.adoc[ownCloud Classic UI] and xref:web_with_oc_server.adoc[...] (incl. nav.adoc) — only the bracketed link labels changed; targets and the web_with_oc_server slug are untouched.
• image:{latest-server-version}@server:classic_ui:files_page.png and {oc-marketplace-url} refs unchanged.
• :description: value and page title = heading are rendered prose — appropriate to change.
• README.md links unchanged (only surrounding text).
• Version strings left intact where genuine ("ownCloud Server >= 10.8" → "ownCloud Classic >= 10.8" is a correct product-name swap, version preserved).
• Checks green: Build documentation (Antora xref guard) pass, lint pass.

No changelog in this repo — n/a.

LGTM. Clean prose normalization; previous clean review still holds for the updated HEAD.