docs: improve jinja documentation #1249

Job	Run time
test (ubuntu-latest)	2m 7s
Build x86_64-unknown-linux-musl	15m 44s
test (macos-latest)	2m 5s
Build aarch64-unknown-linux-musl	16m 55s
test (windows-latest)	5m 57s
Build powerpc64le-unknown-linux-gnu	16m 47s
Build x86_64-apple-darwin	19m 34s
Build aarch64-apple-darwin	9m 56s
Build x86_64-pc-windows-gnu	29m 12s
Build x86_64-pc-windows-msvc	27m 57s
Post-process	4s
	2h 26m 18s

Provide feedback