Update describe-result.d.ts fixing createable typo

createable in the Field interface is misspelled see https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/sforce_api_calls_describesobjects_describesobjectresult.htm  It should be createable, not creatable.   The DescribeSObjectResult has createable spelled correctly

types/jsforce/describe-result.d.ts

@@ -70,7 +70,7 @@ export interface Field {
     caseSensitive: boolean;
     compoundFieldName?: maybe<string>;
     controllerName?: maybe<string>;
-    creatable: boolean;
+    createable: boolean;
     custom: boolean;
     defaultValue?: maybe<string | boolean>;
     defaultValueFormula?: maybe<string>;