removed doubled slash from download.xml
removed doubled slash from download.xml

janosch715/mbeddr.core,janosch715/mbeddr.core,janosch715/mbeddr.core,mbeddr/mbeddr.core,janosch715/mbeddr.core,mbeddr/mbeddr.core,mbeddr/mbeddr.core,mbeddr/mbeddr.core,mbeddr/mbeddr.core,janosch715/mbeddr.core