py/py.mk: Fix broken Gmane URL.

py/py.mk

@@ -326,7 +326,7 @@ $(PY_BUILD)/vm.o: CFLAGS += $(CSUPEROPT)
 # may require disabling tail jump optimization. This will make sure that
 # each opcode has its own dispatching jump which will improve branch
 # branch predictor efficiency.
-# http://article.gmane.org/gmane.comp.lang.lua.general/75426
+# https://marc.info/?l=lua-l&m=129778596120851
 # http://hg.python.org/cpython/file/b127046831e2/Python/ceval.c#l828
 # http://www.emulators.com/docs/nx25_nostradamus.htm
 #-fno-crossjumping