fix(doc): remove doc_auto_cfg

[Berrysoft]

rust-lang/rust#138907

[Copilot]

Pull Request Overview

This PR removes the doc_auto_cfg feature flag from all library crates in the compio project, leaving only the doc_cfg feature enabled for documentation builds. The change simplifies the documentation configuration by removing automatic feature detection.

• Removed doc_auto_cfg from the cfg_attr directive across all 11 library crates
• Retained doc_cfg feature for manual control over documentation of conditional features

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
compio/src/lib.rs	Removed doc_auto_cfg from main library crate
compio-tls/src/lib.rs	Removed doc_auto_cfg from TLS support crate
compio-signal/src/lib.rs	Removed doc_auto_cfg from signal handling crate
compio-runtime/src/lib.rs	Removed doc_auto_cfg from runtime crate
compio-quic/src/lib.rs	Removed doc_auto_cfg from QUIC protocol crate
compio-process/src/lib.rs	Removed doc_auto_cfg from process management crate
compio-net/src/lib.rs	Removed doc_auto_cfg from networking crate
compio-io/src/lib.rs	Removed doc_auto_cfg from I/O operations crate
compio-fs/src/lib.rs	Removed doc_auto_cfg from filesystem operations crate
compio-driver/src/lib.rs	Removed doc_auto_cfg from platform driver crate
compio-buf/src/lib.rs	Removed doc_auto_cfg from buffer management crate

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[George-Miao]

LGTM