some docs supplements

docs/docs/en.md

@@ -139,7 +139,7 @@ This process is divided in three phases: <strong>start</strong>, <strong>upload<
 
 #### start
 
-This is the first phase of the process. We'll tell the backend that we are going to upload a file, with certain `size` and `mime_type`.
+This is the first phase of the process. We'll tell the backend that we are going to upload a file, with certain `size`, `name` and `mime_type`.
 
 Use the option `startBody` to add more parameters to the body of this request.
 

src/chunk/ChunkUploadHandler.js

@@ -45,7 +45,7 @@ export default class ChunkUploadHandler {
   }
 
   /**
-   * Gets the file size
+   * Gets the file name
    */
   get fileName () {
     return this.file.name