small code readability and typo fixes

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 993618e..793e3dc 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -34,7 +34,7 @@
 #endif /* SHOW_USAGE */
 
 
-/* Include generated applet names, pointers to <apllet>_main, etc */
+/* Include generated applet names, pointers to <applet>_main, etc */
 #include "applet_tables.h"