Correct error message about resolve specified on input fields (#1496)

Fixes #709

Author: IvanGoncharov

src/type/__tests__/definition-test.js

@@ -1027,7 +1027,7 @@ describe('Type System: Input Object fields must not have resolvers', () => {
       },
     });
     expect(() => inputObjType.getFields()).to.throw(
-      'SomeInputObject.f field type has a resolve property, ' +
+      'SomeInputObject.f field has a resolve property, ' +
         'but Input Types cannot define resolvers.',
     );
   });
@@ -1043,7 +1043,7 @@ describe('Type System: Input Object fields must not have resolvers', () => {
       },
     });
     expect(() => inputObjType.getFields()).to.throw(
-      'SomeInputObject.f field type has a resolve property, ' +
+      'SomeInputObject.f field has a resolve property, ' +
         'but Input Types cannot define resolvers.',
     );
   });

src/type/definition.js

@@ -1244,7 +1244,7 @@ function defineInputFieldMap(
     };
     invariant(
       !field.hasOwnProperty('resolve'),
-      `${config.name}.${fieldName} field type has a resolve property, but ` +
+      `${config.name}.${fieldName} field has a resolve property, but ` +
         'Input Types cannot define resolvers.',
     );
     resultFieldMap[fieldName] = field;