Rename pollination folder to hbJSON-sample-files

[mostaphaRoudsari]

I think the folder for hbJSON files should be named similar to other folders and based on the filename. It's currently named as pollination but I think hbjson-sample-files is a better name.

I did not change the folder name as I think it will break all the links that are looking for the file under the current name. It will be good to rename the folder at some point though.