Issue #28496: Mark up constants 0, 1 and -1 that denote return values or
special input values as literal text.
diff --git a/Doc/c-api/conversion.rst b/Doc/c-api/conversion.rst
index b987469..4b4d156 100644
--- a/Doc/c-api/conversion.rst
+++ b/Doc/c-api/conversion.rst
@@ -126,7 +126,7 @@
*format_code* must be one of ``'e'``, ``'E'``, ``'f'``, ``'F'``,
``'g'``, ``'G'`` or ``'r'``. For ``'r'``, the supplied *precision*
- must be 0 and is ignored. The ``'r'`` format code specifies the
+ must be ``0`` and is ignored. The ``'r'`` format code specifies the
standard :func:`repr` format.
*flags* can be zero or more of the values *Py_DTSF_SIGN*,