Fix the line defining the docs file for the s390 section
Fix the line defining the docs file for the s390 section

Extra '+' made it to the beginning of the line somehow.

atodorov/libblockdev,rhinstaller/libblockdev,rhinstaller/libblockdev,vpodzime/libblockdev,vpodzime/libblockdev,atodorov/libblockdev,vpodzime/libblockdev,rhinstaller/libblockdev,atodorov/libblockdev