added area field instead of hectare

jey_erp/custom_fields.py

@@ -255,11 +255,11 @@ def create_custom_fields():
                 description='Enter the tax-exempt area value'
             ),
             dict(
-                fieldname='hectare',
+                fieldname='area',
-                label='Hectare',
+                label='Area',
                 fieldtype='Float',
                 insert_after='tax_exempt_area',
-                description='Enter the area in hectares',
+                description='For agricultural: hectares (used) or square meters (unused). For industrial: always square meters.',
                 precision=4
             )
         ],