Merge pull request #17891 from newraina/fix-fetch-io-type

add patch method definition for fetch.io package

types/fetch.io/fetch.io-tests.ts

@@ -23,6 +23,10 @@ request
   .put('')
   .json();
 
+request
+  .patch('')
+  .json();
+
 request
   .config('key', 'value')
   .json();

types/fetch.io/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for fetch.io 4.0
+// Type definitions for fetch.io 4.1
 // Project: https://github.com/haoxins/fetch.io
 // Definitions by: newraina <https://github.com/newraina>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -63,6 +63,11 @@ export class Request {
    */
   put: (url: TUrl) => this;
 
+  /**
+   * HTTP patch method
+   */
+  patch: (url: TUrl) => this;
+
   /**
    * Set Options
    */
@@ -93,7 +98,7 @@ export class Request {
   send(data: {[key: string]: any}): this;
 
   /**
-   * ppend formData
+   * append formData
    */
   append(key: string, value: any): this;