Update README.md

Author: wkh237

README.md

@@ -470,10 +470,10 @@ You can also grouping requests by using `session` API, and use `dispose` to remo
 
 ```
 
-## API
-
 ---
 
+## API
+
 ### `config(options:RNFetchBlobConfig):fetch`
 
 `0.5.0`
@@ -482,8 +482,6 @@ Config API was introduced in `v0.5.0` which provides some options for the `fetch
 
 see [RNFetchBlobConfig](#user-content-rnfetchblobconfig)
 
----
-
 ### `fetch(method, url, headers, body):Promise<FetchBlobResponse>`
 
 `legacy`
@@ -500,8 +498,6 @@ Headers of HTTP request, value of headers should be `stringified`, if you're upl
 Body of the HTTP request, body can either be a BASE64 string, or an array contains object elements, each element have 2  required property `name`, and `data`, and 1 optional property `filename`, once `filename` is set, content in `data` property will be consider as BASE64 string that will be converted into byte array later.
 When body is a base64 string , this string will be converted into byte array in native code, and the request body will be sent as `application/octet-stream`.
 
----
-
 ### `fetch(...).progress(eventListener):Promise<FetchBlobResponse>`
 
 `0.4.2`
@@ -516,8 +512,6 @@ A function that triggers when there's data received/sent, first argument is the
 
 TODO
 
----
-
 ### `base64`
 
 
@@ -530,8 +524,6 @@ RNFetchBlob.base64.encode(data)
 RNFetchBlob.base64.decode(data)
 ```
 
----
-
 ### `fs`
 
 `0.5.0`
@@ -736,10 +728,10 @@ RNFetchBlob.fs.stat(PATH_OF_THE_TARGET)
 
 Connect `Media Scanner` and scan the file. see [Android Media Scanner, and Downloads App Support](#user-content-android-media-scanner-and-downloads-app-support) chapter for more information.
 
-## Types
-
 ---
 
+## Types
+
 ### RNFetchBlobConfig
 
 A set of configurations that will be injected into a `fetch` method, with the following properties.