documentation: Fix markup in flags.

diff --git a/miniexpect.pod b/miniexpect.pod
index 3c3be82..cd008fc 100644 (file)
--- a/miniexpect.pod
+++ b/miniexpect.pod
@@ -94,7 +94,7 @@ The flags may contain the following values, logically ORed together:
 
 =over 4
 
-=item C<MEXP_SPAWN_KEEP_SIGNALS>
+=item B<MEXP_SPAWN_KEEP_SIGNALS>
 
 Do not reset signal handlers to C<SIG_DFL> in the subprocess.