doc-gen: migrate scalar functions (crypto) documentation #36386

Job	Run time
Check cargo fmt	48s
Check License Header	2m 28s
linux build test	3m 44s
build with wasm-pack	3m 16s
cargo test (macos-aarch64)	11m 38s
Verify Vendored Code	54s
Verify MSRV (Min Supported Rust Version)	8m 58s
cargo check functions	1m 42s
cargo test (amd64)	11m 1s
cargo check datafusion	4m 52s
cargo check no default features	7m 44s
cargo doc	4m 31s
cargo test datafusion-cli (amd64)	4m 51s
cargo test doc (amd64)	17m 31s
cargo examples (amd64)	14m 28s
check Cargo.toml formatting	2m 54s
clippy	7m 15s
check configs.md and ***_functions.md is up-to-date	3m 45s
cargo test hash collisions (amd64)	16m 5s
Run sqllogictest with Postgres runner	4m 16s
cargo test pyarrow (amd64)	3m 0s
verify benchmark results (amd64)	8m 6s
	2h 23m 47s

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