Fix a typo in the spec file.
Fix a typo in the spec file.

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