CLEANUP: Fix a typo in the signal subsystem

Fixes a typo in the code comments of the signal subsystem.
diff --git a/src/signal.c b/src/signal.c
index 2484a44..20236fa 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -131,7 +131,7 @@
 	sigset_t set;
 
 	/* Ensure signals are not blocked. Some shells or service managers may
-	 * accidently block all of our signals unfortunately, causing lots of
+	 * accidentally block all of our signals unfortunately, causing lots of
 	 * zombie processes to remain in the background during reloads.
 	 */
 	sigemptyset(&set);