nit

Author: corona10

Doc/library/mmap.rst

@@ -329,7 +329,7 @@ To map anonymous memory, -1 should be passed as the fileno along with the length
       .. versionadded:: 3.13
 
    .. method:: set_name(name)
-      
+
       Annotate the memory map with the given *name* for easier identification
       in ``/proc/<pid>/maps`` if the kernel supports the feature and :option:`-X dev <-X>` is passed
       to the Python or Python is built in :ref:`debug mode <debug-build>`