Use :samp: role.

Doc/library/multiprocessing.rst

@@ -1810,9 +1810,9 @@ Address Formats
   filesystem.
 
 * An ``'AF_PIPE'`` address is a string of the form
-   ``r'\\.\pipe\PipeName'``.  To use :func:`Client` to connect to a named
+   :samp:`r'\\\\.\\pipe\\{PipeName}'`.  To use :func:`Client` to connect to a named
    pipe on a remote computer called ServerName* one should use an address of the
-   form ``r'\\ServerName\pipe\PipeName'`` instead.
+   form :samp:`r'\\\\{ServerName}\\pipe\\{PipeName}'`` instead.
 
 Note that any string beginning with two backslashes is assumed by default to be
 an ``'AF_PIPE'`` address rather than an ``'AF_UNIX'`` address.