[PR #12042/a52e149c backport][3.14] docs: Document asyncio.TimeoutError for WebSocketResponse.receive methods (#12087)

**This is a backport of PR #12042 as merged into master
(a52e149).**

Co-authored-by: Varun Chawla <[email protected]>

Author: patchback[bot]

CHANGES/12042.doc.rst

@@ -0,0 +1,2 @@
+Documented :exc:`asyncio.TimeoutError` for ``WebSocketResponse.receive()``
+and related methods -- by :user:`veeceey`.

docs/web_reference.rst

@@ -1306,6 +1306,8 @@ and :ref:`aiohttp-web-signals` handlers::
 
       :raise RuntimeError: if connection is not started
 
+      :raise asyncio.TimeoutError: if timeout expires before receiving a message
+
    .. method:: receive_str(*, timeout=None)
       :async:
 
@@ -1324,6 +1326,8 @@ and :ref:`aiohttp-web-signals` handlers::
 
       :raise aiohttp.WSMessageTypeError: if message is not :const:`~aiohttp.WSMsgType.TEXT`.
 
+      :raise asyncio.TimeoutError: if timeout expires before receiving a message
+
    .. method:: receive_bytes(*, timeout=None)
       :async:
 
@@ -1343,6 +1347,8 @@ and :ref:`aiohttp-web-signals` handlers::
 
       :raise aiohttp.WSMessageTypeError: if message is not :const:`~aiohttp.WSMsgType.BINARY`.
 
+      :raise asyncio.TimeoutError: if timeout expires before receiving a message
+
    .. method:: receive_json(*, loads=json.loads, timeout=None)
       :async:
 
@@ -1366,6 +1372,7 @@ and :ref:`aiohttp-web-signals` handlers::
 
       :raise TypeError: if message is :const:`~aiohttp.WSMsgType.BINARY`.
       :raise ValueError: if message is not valid JSON.
+      :raise asyncio.TimeoutError: if timeout expires before receiving a message
 
 
 .. seealso:: :ref:`WebSockets handling<aiohttp-web-websockets>`