docs: Update configuration for memory limiter unification

[Copilot]

What's Changed in this PR

Updates documentation to reflect memory limiter unification from GreptimeTeam/greptimedb#7437, which replaces global write memory limits with protocol-specific controls.

Deprecated options:

• max_in_flight_write_bytes - Global memory limit for concurrent writes
• write_bytes_exhausted_policy - Global exhaustion policy

New protocol-specific options:

• http.memory_exhausted_policy - HTTP server memory exhaustion policy
• grpc.memory_exhausted_policy - gRPC server memory exhaustion policy

Supported values: "wait" (default, 10s timeout), "wait(<duration>)", "fail"

[http]
addr = "127.0.0.1:4000"
memory_exhausted_policy = "wait"

[grpc]
bind_addr = "127.0.0.1:4001"
memory_exhausted_policy = "wait"

Checklist

• Please confirm that all corresponding versions of the documents have been revised.
• Please ensure that the content in sidebars.ts matches the current document structure when you changed the document structure.
• This change requires follow-up update in localized docs.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Update docs for feat!: memory limiter unification write path</issue_title>
<issue_description>A document change request is generated from GreptimeTeam/greptimedb#7437</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Update docs for feat!: memory limiter unification write path #2266

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[cloudflare-workers-and-pages]

Deploying greptime-docs with    Cloudflare Pages

Latest commit:	cc68f5b
Status:	✅  Deploy successful!
Preview URL:	https://e5a723e2.greptime-docs.pages.dev
Branch Preview URL:	https://copilot-update-memory-limite.greptime-docs.pages.dev

View logs

[fengjiachun]

Close it — no changes needed.