docs: warn that static file serving follows symlinks under web_root #2505

Job	Run time
docker_build (linux/amd64, minimal)	3m 56s
windows_test	3m 48s
compile_and_lint	3m 55s
docker_build (linux/arm64, minimal)	3m 56s
hurl_examples	5s
docker_build (linux/amd64, duckdb)	3m 57s
docker_build (linux/arm/v7, minimal)	3m 58s
docker_build (linux/arm64, duckdb)	3m 50s
hurl (${{ matrix.example }})	1s
playwright	1s
test	1s
docker_push	1s
	27m 29s

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