style: adjust example schema

Author: ChenZiHong-Gavin

graphgen/templates/extraction/schemas/legal_contract.json

@@ -4,53 +4,43 @@
   "description": "A legal contract for leasing property.",
   "properties": {
       "leased_space": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "Description of the space that is being leased."
       },
       "lessee": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "The lessee's name (and possibly address)."
       },
       "lessor": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "The lessor's name (and possibly address)."
       },
       "signing_date": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "The date the contract was signed."
       },
       "start_date": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "The start date of the lease."
       },
       "end_date": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "The end date of the lease."
       },
       "term_of_payment": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "Description of the payment terms."
       },
       "designated_use": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "Designated use of the property being leased."
       },
       "extension_period": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "Description of the extension options for the lease."
       },
       "expiration_date_of_lease": {
-          "type": "array",
-          "items": {"type": "string"},
+          "type": "string",
           "description": "The expiration date of the lease."
       }
   },