[Toybox] [PATCH] fix typo in printf

[enh]

diff --git a/toys/posix/printf.c b/toys/posix/printf.c
index 5fec4f9..1c2c547 100644
--- a/toys/posix/printf.c
+++ b/toys/posix/printf.c
@@ -22,7 +22,7 @@ config PRINTF
 #define FOR_printf
 #include "toys.h"

-// Detect matching character (return true/valse) and advance pointer if match.
+// Detect matching character (return true/false) and advance pointer if match.
 static int eat(char **s, char c)
 {
   int x = (**s == c);