Visually align table def with respective enum. NFC

'warn_attribute_wrong_decl_type' has to stay in sync with
'enum AttributeDeclKind' which is much easier when they line up.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@283601 91177308-0d34-0410-b5e6-96231b3b80d8