Merge pull request planetlabs#228 from planetlabs/minor-doc-fix

fix CLI example for date filter

Author: sarasafavi

docs/source/cli/examples.rst

@@ -12,11 +12,11 @@ Get the latest 10 items from the API of any ItemType::
 
 Get recently acquired PSScene3Band ItemType records::
 
-    planet data search --item-type PSScene3Band --date gt 2017-02-14
+    planet data search --item-type PSScene3Band --date acquired gt 2017-02-14
 
 Item types can be specified case-insensitively, with prefix matching in the CLI::
 
-    planet data search --item-type psscene --date gt 2017-02-14
+    planet data search --item-type psscene --date acquired gt 2017-02-14
 
 Search for a month. Note: criteria are applied as an AND filter::