docs: add empty line for readability

Author: kenjis

user_guide_src/source/libraries/curlrequest.rst

@@ -306,8 +306,10 @@ multipart
 =========
 
 When you need to send files and other data via a POST request, you can use the ``multipart`` option, along with
-the `CURLFile Class <https://www.php.net/manual/en/class.curlfile.php>`_. The values should be an associative array
-of POST data to send. For safer usage, the legacy method of uploading files by prefixing their name with an `@`
+the `CURLFile Class <https://www.php.net/manual/en/class.curlfile.php>`_.
+
+The values should be an associative array
+of POST data to send. For safer usage, the legacy method of uploading files by prefixing their name with an ``@``
 has been disabled. Any files that you want to send must be passed as instances of CURLFile:
 
 .. literalinclude:: curlrequest/028.php