Fix lldb(1) man page formatting

- Use canonical date order (per groff & mandoc)
- Fix capitalization on one .Nm
- Remove EOL whitespace

Patch by Baptiste Daroussin in FreeBSD svn r274927.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@222655 91177308-0d34-0410-b5e6-96231b3b80d8