YETUS-891. Incorrect link to yetus-dl.sh (#63)

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
diff --git a/asf-site-src/source/downloads.html.md.erb b/asf-site-src/source/downloads.html.md.erb
index daa120a..d5b4380 100644
--- a/asf-site-src/source/downloads.html.md.erb
+++ b/asf-site-src/source/downloads.html.md.erb
@@ -62,7 +62,7 @@
 
 ## Helper Script
 
-To aid in downloading Apache Yetus for continuous integration systems, local build environments, etc, we provide a simple script that may be checked into your local repo [here](https://github.com/apache/yetus/yetus-dl.sh). It takes two parameters:
+To aid in downloading Apache Yetus for continuous integration systems, local build environments, etc, we provide a simple script that may be checked into your local repo [here](https://raw.githubusercontent.com/apache/yetus/master/yetus-dl.sh). It takes two parameters:
 
 ```bash
 $ yetus-dl.sh <location> <version>