Merge pull request #298 from rkudryashov/fix_doc

Fix custom scalars doc

docs/en/src/custom_scalars.md

@@ -19,7 +19,7 @@ impl ScalarType for StringNumber {
             Ok(value.parse().map(StringNumber)?)
         } else {
             // If the type does not match
-            Err(InputValueError::ExpectedType(value))
+            Err(InputValueError::expected_type(value))
         }
     }
 

docs/zh-CN/src/custom_scalars.md

@@ -20,7 +20,7 @@ impl ScalarType for StringNumber {
             Ok(value.parse().map(StringNumber)?)
         } else {
             // 类型不匹配
-            Err(InputValueError::ExpectedType(value))
+            Err(InputValueError::expected_type(value))
         }
     }