Doc: Minor adjustment of `socket.create_server` docs (#26938)

- fix spelling in create_server() docs
- add a line about create_server() in the socket.py docstring

Doc/library/socket.rst

@@ -712,7 +712,7 @@ The following functions all create :ref:`socket objects <socket-objects>`.
 .. function:: create_server(address, *, family=AF_INET, backlog=None, reuse_port=False, dualstack_ipv6=False)
 
    Convenience function which creates a TCP socket bound to *address* (a 2-tuple
-   ``(host, port)``) and return the socket object.
+   ``(host, port)``) and returns the socket object.
 
    *family* should be either :data:`AF_INET` or :data:`AF_INET6`.
    *backlog* is the queue size passed to :meth:`socket.listen`; when ``0``

Lib/socket.py

@@ -28,6 +28,7 @@ socket.getdefaulttimeout() -- get the default timeout value
 socket.setdefaulttimeout() -- set the default timeout value
 create_connection() -- connects to an address, with an optional timeout and
                        optional source address.
+create_server() -- create a TCP socket and bind it to a specified address.
 
  [*] not available on all platforms!