[3.14] gh-135862: add C contiguous one-dimensional buffer requirement to asyncio.StreamWriter docs (GH-137910) (#137912)

gh-135862: add C contiguous one-dimensional buffer requirement to `asyncio.StreamWriter` docs (GH-137910)
(cherry picked from commit 1c3950a)

Co-authored-by: Kumar Aditya <[email protected]>

Author: miss-islington

Doc/library/asyncio-stream.rst

@@ -321,6 +321,9 @@ StreamWriter
          stream.write(data)
          await stream.drain()
 
+      .. note::
+         The *data* buffer should be a C contiguous one-dimensional :term:`bytes-like object <bytes-like object>`.
+
    .. method:: writelines(data)
 
       The method writes a list (or any iterable) of bytes to the underlying socket