DOCS-1875 - Split IC vs OTel benchmarks by collection method

[amee-sumo]

Purpose of this pull request

This pull request splits the single "Installed Collector vs OpenTelemetry Collector Performance Benchmarks" doc into a landing page plus two collection-method-specific pages, since Remote Windows Event Log (RWEL) collection has a fundamentally different performance profile than local file sources (WinRM-bound throughput ceiling vs. a linear ramp).

• New landing page: ic-vs-ot-collector-performance-benchmarks/index.md, with card links to both sub-pages
• local-file-source-benchmarks.md: existing local file source benchmark content (renamed from the original single-file doc)
• remote-windows-event-log-benchmarks.md: new RWEL-specific benchmark data, with its own recommendation, test environment, and results tables
• Updated sidebars.ts to a category linking to the new index and its two children
• Fixed two Remote Windows Event Log source docs that linked to the old combined page path

Select the type of change

• Minor Changes - Typos, formatting, slight revisions
• Update Content - Revisions, updating sections
• New Content - New features, sections, pages, tutorials
• Site and Tools - .clabot, version updates, maintenance, dependencies, new packages for the site (Docusaurus, Gatsby, React, etc.)

Ticket (if applicable)

https://sumologic.atlassian.net/browse/DOCS-1875

[kimsauce]

Structure, sidebar wiring, and internal links all check out, and CI is green (spellcheck, build checks). Left three inline notes on remote-windows-event-log-benchmarks.md: an inconsistent heading level, a sentence running into the previous bullet from a missing blank line, and a missing id field in the frontmatter. None of that blocks merging.

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Generated by Claude Code

[kimsauce]

Re-reviewed after the latest push. All prior findings are fixed: the heading level on remote-windows-event-log-benchmarks.md is now consistent (### Test conditions), the missing bullet before "Neither collector exceeded the 190% safety cutoff..." is in, id fields are set on both new/renamed pages, the landing page now uses slug per the suggested fix, and a card for the new landing page was added to docs/send-data/index.md. CI is green (spellcheck, build checks, merge window). Nothing further from me.

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Generated by Claude Code

[kimsauce]

looks good