fixup! test: add globbing utility for testing Markdown as doctests (#… #1015

Job	Run time
pre_job	5s
linux (x86_64-unknown-linux-gnu)	3m 43s
linux (i686-unknown-linux-gnu)	4m 31s
linux-cross (aarch64-unknown-linux-gnu, aarch64)	3m 36s
macos-universal (universal2-apple-darwin)	4m 49s
linux-cross (armv7-unknown-linux-gnueabihf, armv7)	3m 42s
windows (x86_64-pc-windows-msvc, x64)	10m 31s
windows (i686-pc-windows-msvc, x86)	12m 22s
windows (aarch64-pc-windows-msvc, x64)	14m 16s
Release	0s
	57m 35s

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