[doxygen] Consistent bolding in list.
[doxygen] std dev -> standard deviation
Merge pull request #272 from chrisdembia/touch-up-cmaes-doxygen

[doxygen] Consistent bolding in list.
[doxygen] Direct users to cmaes default values.
Merge pull request #273 from chrisdembia/touch-up-cmaes-doxygen

[doxygen] Direct users to cmaes default values.
Resolve merge conflicts.