Marked keystrokes with the :kbd: role.
Fixed the case of the "Ctrl-" prefixes.
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 29d56fc..fe7983b 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -77,7 +77,7 @@
 
 .. data:: CTRL_C_EVENT
 
-   The signal corresponding to the CTRL+C keystroke event. This signal can
+   The signal corresponding to the :kbd:`Ctrl+C` keystroke event. This signal can
    only be used with :func:`os.kill`.
 
    Availability: Windows.
@@ -87,7 +87,7 @@
 
 .. data:: CTRL_BREAK_EVENT
 
-   The signal corresponding to the CTRL+BREAK keystroke event. This signal can
+   The signal corresponding to the :kbd:`Ctrl+Break` keystroke event. This signal can
    only be used with :func:`os.kill`.
 
    Availability: Windows.