Update pycmap_rm_cp_3d.rst

[MSchatzUW]

Megan's comments and edits. The 3D plot is super cool by the way.

[MSchatzUW]

Removed Comments below:
“ Change the APIs vizEngine_ parameter if you wish to use a different
visualization library. Returns the generated graph objects in form of a
python list. One may use the returned objects to modify the graph
properties.”

..COMMENT: I would have the above hyperlink go to the API methods page.

“ exportDataFlag: boolean, default: False
If True, the graph data points are stored on the local machine. The export path and file format are set by the APIs parameters_.”
..COMMENT: I think the hyperlink above should direct the user to the API methods page instead.

“Example 2: Sparse Maps”
..COMMENT: the dataset below “Global Pikophytoplankton” should be spelled “Global Picophytoplankton”. Change the k to a c. If I changed it myself, it looks like it could mess up the hyperlink since the page itself is misspelled too.