update to new C roles and directives
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 9229117..29d56fc 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -69,7 +69,7 @@
All the signal numbers are defined symbolically. For example, the hangup signal
is defined as :const:`signal.SIGHUP`; the variable names are identical to the
names used in C programs, as found in ``<signal.h>``. The Unix man page for
- ':cfunc:`signal`' lists the existing signals (on some systems this is
+ ':c:func:`signal`' lists the existing signals (on some systems this is
:manpage:`signal(2)`, on others the list is in :manpage:`signal(7)`). Note that
not all systems define the same set of signal names; only those names defined by
the system are defined by this module.
@@ -216,7 +216,7 @@
Note that installing a signal handler with :func:`signal` will reset the
restart behaviour to interruptible by implicitly calling
- :cfunc:`siginterrupt` with a true *flag* value for the given signal.
+ :c:func:`siginterrupt` with a true *flag* value for the given signal.
.. versionadded:: 2.6