Fix padding on asyncio.IncompleteReadError docs (GH-12258)



diff --git a/Doc/library/asyncio-exceptions.rst b/Doc/library/asyncio-exceptions.rst
index dbd5df7..e49577a 100644
--- a/Doc/library/asyncio-exceptions.rst
+++ b/Doc/library/asyncio-exceptions.rst
@@ -65,11 +65,11 @@
 
 .. exception:: IncompleteReadError
 
-    The requested read operation did not complete fully.
+   The requested read operation did not complete fully.
 
-    Raised by the :ref:`asyncio stream APIs<asyncio-streams>`.
+   Raised by the :ref:`asyncio stream APIs<asyncio-streams>`.
 
-    This exception is a subclass of :exc:`EOFError`.
+   This exception is a subclass of :exc:`EOFError`.
 
    .. attribute:: expected