cutting the documentation of compare.R

diff --git a/tools/compare.R b/tools/compare.R
index 6a1fb01..3ecd06b 100644
--- a/tools/compare.R
+++ b/tools/compare.R
@@ -16,7 +16,7 @@
 #	source("PATHtoRACSrepo/tools/compare.R")
 #
 #    now, several functions should be available for you to use, including some
-#    tests cases; eg.
+#    tests cases...
 #
 #
 ########################################################################