docs: add comments to download-soil-data

Author: paulschreiber

Makefile

@@ -116,6 +116,13 @@ bash:
 	$(DC_RUN_CMD) bash
 
 # Donwload Munsell CSV, SHX, SHP, SBX, SBN, PRJ, DBF
+# 1tN23iVe6X1fcomcfveVp4w3Pwd0HJuTe: LandPKS_munsell_rgb_lab.csv
+# 1WUa9e3vTWPi6G8h4OI3CBUZP5y7tf1Li: gsmsoilmu_a_us.shx
+# 1l9MxC0xENGmI_NmGlBY74EtlD6SZid_a: gsmsoilmu_a_us.shp
+# 1asGnnqe0zI2v8xuOszlsNmZkOSl7cJ2n: gsmsoilmu_a_us.sbx
+# 185Qjb9pJJn4AzOissiTz283tINrDqgI0: gsmsoilmu_a_us.sbn
+# 1P3xl1YRlfcMjfO_4PM39tkrrlL3hoLzv: gsmsoilmu_a_us.prj
+# 1K0GkqxhZiVUND6yfFmaI7tYanLktekyp: gsmsoilmu_a_us.dbf
 download-soil-data:
 	mkdir -p Data
 	cd Data; \