Fix a typo.

PiperOrigin-RevId: 604094890
Change-Id: If5634a15c7ea7c8ef2cc9b6d09636ee7836946d2
diff --git a/absl/debugging/failure_signal_handler.h b/absl/debugging/failure_signal_handler.h
index 5e03478..4117fac 100644
--- a/absl/debugging/failure_signal_handler.h
+++ b/absl/debugging/failure_signal_handler.h
@@ -33,7 +33,7 @@
 // }
 //
 // Any program that raises a fatal signal (such as `SIGSEGV`, `SIGILL`,
-// `SIGFPE`, `SIGABRT`, `SIGTERM`, `SIGBUG`, and `SIGTRAP`) will call the
+// `SIGFPE`, `SIGABRT`, `SIGTERM`, `SIGBUS`, and `SIGTRAP`) will call the
 // installed failure signal handler and provide debugging information to stderr.
 //
 // Note that you should *not* install the Abseil failure signal handler more