CC Review changes for RMA

[wesbland]

Problem

CC Review changes for RMA

• Replace some use of \code with \infoval
• Replace 3-party with 3rd-party
• Move the discussion of info keys and memory alignment to before the Fotran F90 overload discussion

References and Pull Requests

https://github.com/mpi-forum/mpi-standard/pull/1023

[jeffhammond]

I am not convinced that "Replace 3-party with 3rd-party" is correct.