Use the name of the directory for the installed config, do not requir… #922

Job	Run time
build (vhdl_lang, x86_64-unknown-linux-gnu, stable)	1m 33s
build (vhdl_lang, x86_64-unknown-linux-musl, stable)	1m 35s
build (vhdl_lang, x86_64-pc-windows-msvc, stable)	1m 35s
This is a release build	0s
build (vhdl_lang, aarch64-apple-darwin, stable)	1m 3s
build (vhdl_ls, x86_64-unknown-linux-gnu, stable)	1m 43s
build (vhdl_ls, x86_64-unknown-linux-musl, stable)	1m 43s
build (vhdl_ls, x86_64-pc-windows-msvc, stable)	1m 36s
build (vhdl_ls, aarch64-apple-darwin, stable)	1m 10s
Release	0s
	11m 58s

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