Update cookbook_gallery.csv

Author: jordanplanders

doc/cookbook_gallery.csv

@@ -10,4 +10,5 @@ PaleoPCA,https://github.com/khider/PaleoPCA,https://projectpythia.org/,khider,RE
 pens,https://github.com/LinkedEarth/pens,https://linked.earth,CommonClimate,ug-eg25,https://linked.earth/pens/ug-eg25.html,https://github.com/LinkedEarth/pens/blob/jbook/_config.yml,https://linked.earth/pens,jbook
 AsianSpeleothemCoherency,https://github.com/alexkjames/AsianSpeleothemCoherency,https://alexkjames.github.io,alexkjames,intro,https://alexkjames.github.io/AsianSpeleothemCoherency/intro.html,https://github.com/alexkjames/AsianSpeleothemCoherency/blob/main/_config.yml,https://alexkjames.github.io/AsianSpeleothemCoherency,main
 GeoChronR,https://github.com/nickmckay/GeoChronR,https://nickmckay.github.io,nickmckay,Introduction,http://nickmckay.github.io/GeoChronR/articles/Introduction.html,,https://nickmckay.github.io/GeoChronR,master
-pages2k_cfr_pb,https://github.com/tanaya-g/pages2k_cfr_pb,https://tanaya-g.github.io,tanaya-g,README,https://tanaya-g.github.io/pages2k_cfr_pb/README.html,https://github.com/tanaya-g/pages2k_cfr_pb/blob/main/_config.yml, https://tanaya-g.github.io/pages2k_cfr_pb,main
+pages2k_cfr_pb,https://github.com/tanaya-g/pages2k_cfr_pb,https://tanaya-g.github.io,tanaya-g,README,https://tanaya-g.github.io/pages2k_cfr_pb/README.html,https://github.com/tanaya-g/pages2k_cfr_pb/blob/main/_config.yml, https://tanaya-g.github.io/pages2k_cfr_pb,main
+cropper_ecs,https://github.com/croppers/cropper_ecs,https://cropper.info,croppers,introduction,https://cropper.info/cropper_ecs/introduction.html,https://github.com/croppers/cropper_ecs/blob/main/_config.yml,https://cropper.info/cropper_ecs,main