Tests

gh-139843: Document signals (SIGSTOP, SIGVTALRM, SIGPROF) to fix sphinx references #169371

Job	Run time
Change detection / Create context from changed files	12s
Cross build Linux	0s
Check if generated files are up to date	0s
Sanitizers${{ '' }}	0s
Hypothesis tests on Ubuntu	0s
Check if Autoconf files are up to date	0s
Windows MSI${{ '' }}	0s
WASI	0s
CIFuzz	0s
Ubuntu ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }} ${{ fromJSON(matrix.bolt) && '(bolt)' \|\| '' }}	0s
Android (${{ matrix.arch }})	0s
Windows ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	0s
Ubuntu SSL tests with AWS-LC	0s
Address sanitizer	0s
Ubuntu SSL tests with OpenSSL	0s
macOS ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	0s
Docs / Docs	1m 56s
Docs / Check EPUB	2m 16s
Docs / Doctest	6m 28s
All required checks pass	3s
	10m 55s

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