Add missing examples #2628

Job	Run time
Docs	1m 27s
build_versions (stable)	10s
build_versions (beta)	16s
Test	32s
cargo-deny (aarch64-apple-ios)	19s
Lint	30s
Test (charset)	46s
build_versions (1.71.1)	16s
Test (cookies)	34s
cargo-deny (aarch64-linux-android)	21s
Test (socks-proxy)	31s
Test	41s
cargo-deny (i686-pc-windows-gnu)	18s
Test (gzip)	30s
Test (charset)	42s
Test (brotli)	29s
cargo-deny (i686-pc-windows-msvc)	19s
Test (cookies)	53s
Test (json)	30s
cargo-deny (i686-unknown-linux-gnu)	26s
Test (socks-proxy)	51s
Test (native-tls)	39s
cargo-deny (wasm32-unknown-unknown)	23s
Test (gzip)	53s
cargo-deny (x86_64-apple-darwin)	24s
Test (brotli)	40s
cargo-deny (x86_64-apple-ios)	21s
Test (json)	45s
cargo-deny (x86_64-pc-windows-gnu)	20s
Test (native-tls)	51s
cargo-deny (x86_64-pc-windows-msvc)	19s
cargo-deny (x86_64-unknown-linux-gnu)	18s
cargo-deny (x86_64-unknown-redox)	16s
	17m 30s

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