Update README.md

README.md

@@ -188,12 +188,12 @@ bin/randomize_checksum_ages.pl config.yaml
 # Configuration Notes
 
 ## Field Definition Keywords
-When configuring client districts, there a number of keywords that may be used 
+When configuring client districts, a number of keywords may be used 
 to define the way the software will handle incoming data and derivative fields:
 * `type`: Symphony field type (used to determine data structure needed in JSON)
 * `overlay`: If true, update field when updating existing record
 * `validate`: Field validation rule to apply to incoming data (ingestor will throw error and skip record if validation fails)
-* `transform`: Transformation function (in ingestor.pl) which takes validated input from one field and returns a valid value
+* `transform`: Transformation function (in ingestor.pl) which takes validated input from one or more fields in the incoming or existing record data and returns a valid value
 * `overlay_default`: Value to use in update IF FIELD CURRENTLY EMPTY
 * `overlay_value`: Value to ALWAYS overlay existing value during update
 * `new_default`: Value to use in create IF FIELD CURRENTLY EMPTY