gh-139843: Document `signal.SIGQUIT` to fix Sphinx references (#139844)

diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 66f31b28da2a95027b3f5e77477ba78b77703fa2..0c681c795c1a5521c9e63541ab1319a465540b8c 100644 (file)
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -205,6 +205,12 @@ The variables defined in the :mod:`signal` module are:
 
    .. availability:: Unix.
 
+.. data:: SIGQUIT
+
+   Terminal quit signal.
+
+   .. availability:: Unix.
+
 .. data:: SIGSEGV
 
    Segmentation fault: invalid memory reference.