Update Secure Tunnel Userguide (#615) #1632

Job	Run time
linux-compat (manylinux2014-x64)	5m 11s
linux-compat (manylinux2014-x86)	7m 8s
linux-compat (al2-x64)	5m 23s
linux-compat (alpine-3.16-x64)	9m 54s
linux-compat (alpine-3.16-x86)	9m 50s
linux-compat (alpine-3.16-armv6)	1h 16m 51s
linux-compat (alpine-3.16-armv7)	1h 12m 9s
linux-compat (alpine-3.16-arm64)	1h 29m 53s
raspberry (raspbian-bullseye)	1h 27m 21s
byo-crypto	2m 53s
check-codegen-edits	4s
check-docs	5m 33s
check-submodules	8s
linux-github-actions	8m 47s
linux-compiler-compat (clang-3)	5m 45s
linux-compiler-compat (clang-6)	5m 32s
linux-compiler-compat (clang-8)	5m 59s
linux-compiler-compat (clang-9)	6m 13s
linux-compiler-compat (clang-10)	6m 34s
linux-compiler-compat (clang-11)	5m 4s
linux-compiler-compat (gcc-4.8)	5m 14s
linux-compiler-compat (gcc-5)	6m 19s
linux-compiler-compat (gcc-6)	5m 14s
linux-compiler-compat (gcc-7)	6m 13s
linux-compiler-compat (gcc-8)	6m 25s
linux-no-cpu-extensions	5m 24s
linux-smoke-tests	8m 51s
osx	11m 2s
windows	13m 46s
windows-app-verifier	16m 1s
windows-no-cpu-extensions	13m 32s
windows-vs14 (Win32)	13m 8s
windows-vs14 (x64)	14m 37s
	9h 1m 58s

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