parameter.md in zero-rails_openapi-1.5.3

- old
+ new

@@ -1,6 +1,6 @@
-### More Explanation for `param` and `schema_hash`
+### More Explanation for `param` and `schema_info`
 
 #### param_type (param_location)
 OpenAPI 3.0 distinguishes between the following parameter types based on the parameter location: 
 **header, path, query, cookie**. [more](https://swagger.io/docs/specification/describing-parameters/)
 
@@ -13,11 +13,11 @@
 #### type (schema_type)
 Parameter's (schema) type. We call it `schema_type` because it is inside SchemaObj.
 
 Support all [data types](https://github.com/OAI/OpenAPI-Specification/blob/OpenAPI.next/versions/3.0.0.md#dataTypes) defined in OAS.   
 
-In addition, you can use `format` in schema_hash to define in fine detail the data type being used, like: 
+In addition, you can use `format` in schema_info to define in fine detail the data type being used, like: 
 int32, float, date ...  
 All the types you can use as following:
   - **String, 'binary', 'base64'**
   - **Integer, Long, 'int32', 'int64', Float, Double**
   - **File** (it will be converted to `{ type: 'string', format: Config.file_format }`)
@@ -39,10 +39,10 @@
  :opt or :req
 
 #### Schema Hash
 
 The [[schema]](https://github.com/OAI/OpenAPI-Specification/blob/OpenAPI.next/versions/3.0.0.md#schemaObject) defining the type used for the parameter. 
-schema_hash(optional) will be used to generate Schema Object inside Parameter Object.  
+schema_info(optional) will be used to generate Schema Object inside Parameter Object.  
 [source code](https://github.com/zhandao/zero-rails_openapi/blob/master/lib/oas_objs/schema_obj.rb)  
 You can set the schema by following keys (all are optional), the words in parentheses are available aliases of the keys:  
   - **enum (values, allowable_values)**  
   Must be Array or Range(will be converted to Array)
   - **must_be (value, allowable_value)**  