Add or correct file descriptions
diff --git a/toys/which.c b/toys/which.c
index df7566c..546bdcc 100644
--- a/toys/which.c
+++ b/toys/which.c
@@ -1,6 +1,6 @@
 /* vi: set sw=4 ts=4: */
 /*
- * which.c - 
+ * which.c - Find executable files in $PATH.
  *
  * Copyright 2006 Rob landley <rob@landley.net>
  */
diff --git a/toys/yes.c b/toys/yes.c
index 860c331..6f2c6a3 100644
--- a/toys/yes.c
+++ b/toys/yes.c
@@ -1,6 +1,6 @@
 /* vi: set sw=4 ts=4: */
 /*
- * hello.c - A hello world program.
+ * yes.c - Repeatedly output a string.
  */
 
 #include "toys.h"