der

der: improve `TeletexStringRef` docs #2696

Job	Run time
build (1.71.0, thumbv7em-none-eabi)	1m 37s
derive (1.71.0)	20s
build (1.71.0, wasm32-unknown-unknown)	1m 28s
derive (stable)	23s
build (stable, thumbv7em-none-eabi)	1m 26s
build (stable, wasm32-unknown-unknown)	1m 22s
minimal-versions	0s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.71.0, sudo apt update && sudo apt install gcc-mult...	10m 28s
test (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mult...	10m 8s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.71.0)	10m 47s
test (x86_64-unknown-linux-gnu, ubuntu-latest, stable)	9m 45s
	47m 44s

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