adding ESRI tutorial

Author: rupesh2

docs/resources.md

@@ -4,6 +4,7 @@
 1. NASA Earthdata Webinar: [Explore NASA GEDI Aboveground Biomass Datasets, Services, and Tools at NASA's ORNL DAAC](https://daac.ornl.gov/resources/tutorials/2022_earthdata_webinar/)
 1. ESA Workshop: [Synergistic Use of SAR and Lidar Data for Terrestrial Ecology Research](https://daac.ornl.gov/resources/workshops/esa-2021-workshop/)
 1. GEDI L1B and L2 Data Resources: https://github.com/nasa/GEDI-Data-Resources
+1. ESRI GEDI Tutorial: https://learn.arcgis.com/en/projects/estimate-biomass-using-gedi-and-landsat-data/
 1. NASA Earthdata Cloud Cookbook: https://nasa-openscapes.github.io/earthdata-cloud-cookbook/
 1. NASA ARSET Training: https://appliedsciences.nasa.gov/get-involved/training/english/arset-use-solar-induced-fluorescence-and-lidar-assess-vegetation
 1. ORNL DAAC Learning: https://daac.ornl.gov/resources/learning/