Revise comment in tests/validate.c

diff --git a/tests/validate.c b/tests/validate.c
index ef1547e..fe79cb3 100644
--- a/tests/validate.c
+++ b/tests/validate.c
@@ -501,7 +501,7 @@
 
 #ifdef MagickCountTempFiles
   (void)GetPathTemplate(path);
-  /* Remove file template except for the leading "magick-" */
+  /* Remove file template except for the leading "/path/to/magick-" */
   path[strlen(path)-17]='\0';
   (void) FormatLocaleFile(stdout," tmp path is '%s*'\n",path);
 #endif