docs: delete MatchedPath nesting section (#2121) #3772

Job	Run time
cargo-hack	8m 45s
cargo-public-api-crates (axum)	1m 28s
cargo-public-api-crates (axum-core)	1m 13s
cargo-public-api-crates (axum-extra)	1m 48s
cargo-public-api-crates (axum-macros)	1m 5s
check	1m 10s
check-docs	42s
cargo-deny check (advisories)	1m 46s
cargo-deny check (bans licenses sources)	2m 3s
dependencies-are-sorted	22s
test-docs	3m 36s
test-versions (stable)	4m 15s
test-versions (beta)	2m 36s
armv5te-unknown-linux-musleabi	1m 43s
test-nightly	4m 0s
test-msrv	7m 4s
wasm32-unknown-unknown	38s
	44m 14s

Provide feedback