Updating installation section docs under Download & Install

[eschabell]

source: build-and-install: fix errors in plugin options tables

  - Remove duplicate `FLB_IN_NODE_EXPORTER_METRICS` row in input plugins table
  - Fix `FLB_IN_PROMETHEUS_REMOTE_WRITE` → `FLB_IN_PROMETHEUS_TEXTFILE` for
    Prometheus textfile input plugin
  - Fix `FLB_IN_SPLUNK` description
  - Fix `FLB_PROCESSOR_SQl` → `FLB_PROCESSOR_SQL`
  - Fix `FLB_OUT_PROMETHEUS_REMOTE_WRITE` link to point to outputs
  - Fix `FLB_OUT_WEBSOCKET` description

linux: raspbian: fix typo in GPG key section
kubernetes: fix broken endtab tag syntax

Summary by CodeRabbit

• Documentation
  • Fixed formatting and syntax errors, and corrected spelling mistakes in Kubernetes and Raspberry Pi installation documentation guides
  • Corrected plugin names, descriptions, and processor reference links throughout the build and installation guide materials
  • Updated plugin cross-references and output documentation links to improve overall consistency and reference accuracy across installation documentation
  • Removed duplicate and outdated entries from installation configuration tables and reference materials

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between dc38f3c and 8597836.

📒 Files selected for processing (3)

• installation/downloads/kubernetes.md
• installation/downloads/linux/raspbian-raspberry-pi.md
• installation/downloads/source/build-and-install.md

---

📝 Walkthrough

Walkthrough

Minor documentation corrections across three files including formatting fixes, typo corrections, and deduplication of plugin references with updated links in Fluent Bit installation guides.

Changes

Cohort / File(s)	Summary
Syntax & Typo Corrections installation/downloads/kubernetes.md, installation/downloads/linux/raspbian-raspberry-pi.md	Fixed template syntax formatting (endtab tag) and corrected capitalization typo ("FLuent" → "Fluent").
Plugin Reference & Link Updates installation/downloads/source/build-and-install.md	Deduplicated plugin table entries, corrected plugin descriptions (Splunk, SQL), moved Prometheus references from inputs to outputs table, added FLB_IN_PROMETHEUS_TEXTFILE reference, updated WebSocket input/output documentation links.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related issues

• Updated needed for installation section docs under Download & Install Fluent Bit #2395: Directly addresses installation/downloads documentation corrections alongside this PR, covering the same section updates.

Possibly related PRs

• Fixing broken links per #2253 #2254: Modifies the same build-and-install.md file with overlapping plugin/link reference adjustments.
• Fixed a few config parameter issues and general fixes throughout fluent bit metrics input plugin doc. Fixes #2251. #2252: Relates to Node exporter metrics documentation updates that align with input entry deduplication in this PR.
• docs: in-prometheus-textfile: fix typos, sorting, descriptions #2339: Updates Prometheus textfile input documentation that corresponds with the FLB_IN_PROMETHEUS_TEXTFILE reference addition.

Suggested reviewers

• cosmo0920
• patrick-stephens

Poem

🐰 A hop through the docs, typos now fixed,
Links cleaned and sorted, no more conflicts,
Prometheus moved from input to out,
Splunk spelled true, no more doubt!

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title is vague and generic; it doesn't specify which documentation errors were fixed or highlight the main corrections (typos, syntax, table corrections).	Consider a more specific title like 'Fix documentation errors in installation docs: typos, syntax, and plugin table corrections' to clearly communicate the changeset scope.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[eschabell]

@cosmo0920 and @patrick-stephens ready for review!