update circle.yml

Author: deedee

circle.yml

@@ -6,7 +6,7 @@ checkout:
   pre:
     - git clone https://github.com/topcoder-platform/tc-website-glue glue
     - git clone https://github.com/topcoder-platform/tc-website-shared shared
-    - git clone https://github.com/topcoder-platform/tc-website-external-artifacts
+    - git clone https://github.com/topcoder-platform/tc-website-external-artifacts external-artifacts
 
 
 test: