Update REST API.md

Author: rsedykh

Documentation/REST API.md

@@ -3,15 +3,15 @@
 * [Initialization](#initialization)
 * [Getting info about account project](#getting-info-about-account-project-api-reference)
 * [Get list of files](#get-list-of-files-api-reference)
-* [File Info](#file-info-api-reference)
+* [File info](#file-info-api-reference)
 * [Delete files](#delete-files-api-reference)
 * [Store files](#store-files-api-reference)
 * [Get list of groups](#get-list-of-groups-api-reference)
 * [Group info](#group-info-api-reference)
 * [Store group](#store-group-api-reference)
 * [Copy file to local storage](#copy-file-to-local-storage-api-reference)
 * [Copy file to remote storage](#copy-file-to-remote-storage-api-reference)
-* [Authenticated urls](#authenticated-urls-api-reference)
+* [Authenticated URLs](#authenticated-urls-api-reference)
 
 
 ### Initialization
@@ -82,7 +82,7 @@ filesList.previousPage { (list, error) in
 }
 ```
 
-### File Info ([API Reference](https://uploadcare.com/api-refs/rest-api/v0.6.0/#operation/fileInfo?utm_source=github&utm_medium=referral&utm_campaign=uploadcare-swift)) ###
+### File info ([API Reference](https://uploadcare.com/api-refs/rest-api/v0.6.0/#operation/fileInfo?utm_source=github&utm_medium=referral&utm_campaign=uploadcare-swift)) ###
 
 ```swift
 uploadcare.fileInfo(withUUID: "1bac376c-aa7e-4356-861b-dd2657b5bfd2") { (file, error) in
@@ -106,6 +106,7 @@ uploadcare.deleteFile(withUUID: "1bac376c-aa7e-4356-861b-dd2657b5bfd2") { (file,
     print(file ?? "")
 }
 ```
+
 Batch file delete:
 ```swift
 let uuids = ["b7a301d1-1bd0-473d-8d32-708dd55addc0", "1bac376c-aa7e-4356-861b-dd2657b5bfd2"]