remove trailing whitespaces from MDBCI scripts

BUILD/mdbci/README.md

@@ -83,4 +83,3 @@ export target="2.1-2018Jan10"
 cd BUILD/mdbci
 ./build.sh
 ```
-

BUILD/mdbci/copy_repos.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# Copyies repo from ${unsorted_repo_dir}/$target/$box to 
+# Copyes repo from ${unsorted_repo_dir}/$target/$box to
 
 dir=`pwd`
 if [ "$box_type" == "RPM" ] ; then