Fix Markdown in BUILDING.md

Author: monkey0506

BUILDING.md

@@ -1,7 +1,7 @@
 Automatic builds are provided via [Travis CI](travis-ci.org). To manually build (requires Mono and
 an Internet connection), just call:
 
-./make_scm.sh Stack
+./make_scm.sh Stack  
 ./make_zip.sh Stack CHANGELOG.md LICENSE.md README.md "Stack Extension Guide.md"
 
 Module metadata can be updated in Stack.xml.