+1

Author: skirpichev

Misc/NEWS.d/3.15.0a1.rst

@@ -6395,7 +6395,7 @@ Add support for configuring compiler flags for the JIT with ``CFLAGS_JIT``
 .. section: Build
 
 Removed implicit fallback to the bundled copy of the ``libmpdec`` library.
-Now this should be explicitly enabled via :option:`--with-system-libmpdec`
+Now this should be explicitly enabled via :option:`!--with-system-libmpdec`
 set to ``no`` or :option:`!--without-system-libmpdec`.  Patch by Sergey B
 Kirpichev.