- update "note", "tip", "warning" blocks to use ">" blocks (which is what the old notebooks used)
- updatea an html link for the Map Resources and Topo in the Additional Documentation to use markdown syntax so it renders properly in the generated webpage
-fixed the xlabels_top and ylabels_right warning by using top_labels and right_labels instead
-fixed the invalid transform error by using PlateCarree() instead of Geodetic()
-fixed the 'extend' warning by moving it from the colorbar() function to the contourf() function
