Add LLDB API reference docs (for Python and C++)

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@186697 91177308-0d34-0410-b5e6-96231b3b80d8
Minor typeo fixes in doc scripts

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@186698 91177308-0d34-0410-b5e6-96231b3b80d8
Add links to LLDB API reference docs

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@186699 91177308-0d34-0410-b5e6-96231b3b80d8