fix: client headers

Author: loks0n

lib/appwrite/client.rb

@@ -15,7 +15,9 @@ def initialize
                 'x-sdk-name'=> 'Ruby',
                 'x-sdk-platform'=> 'server',
                 'x-sdk-language'=> 'ruby',
-                'x-sdk-version'=> '13.0.0',                'X-Appwrite-Response-Format' => '1.6.0'            }
+                'x-sdk-version'=> '13.0.0',
+                'x-appwrite-response-format' => '1.6.0'
+            }
             @endpoint = 'https://cloud.appwrite.io/v1'
         end