Tests

Explain that `add` is the dunder method for `operator.concat` #174574

Job	Run time
Change detection / Create context from changed files	12s
macOS ${{ ((fromJSON(matrix.free-threading) && '(free-threading)') \|\| '') }}	-1s
Check if generated files are up to date	-1s
Hypothesis tests on Ubuntu	0s
Check if Autoconf files are up to date	-1s
Ubuntu SSL tests with OpenSSL	0s
Cross build Linux	0s
Windows ${{ ((fromJSON(matrix.free-threading) && '(free-threading)') \|\| '') }}	-1s
Windows MSI${{ '' }}	-1s
Ubuntu ${{ ((fromJSON(matrix.free-threading) && '(free-threading)') \|\| '') }} ${{ ((fromJSON(matrix.bolt) && '(bolt)') \|\| '') }}	-1s
CIFuzz	-1s
Sanitizers${{ '' }}	0s
Address sanitizer	0s
iOS	0s
Ubuntu SSL tests with AWS-LC	0s
Android (${{ matrix.arch }})	0s
Docs / Docs	1m 44s
WASI	0s
Docs / Doctest	5m 30s
Docs / Check EPUB	2m 21s
All required checks pass	3s
	9m 43s

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