bpo-41426 Fix grammar in curses.getmouse() documentation (GH-21677)

Automerge-Triggered-By: @brettcannon (cherry picked from commit ba18c0b) Co-authored-by: Sebastien Williams-Wynn <s.williamswynn.mail@gmail.com>

Author: miss-islington

Doc/library/curses.rst

@@ -214,7 +214,7 @@ The module :mod:`curses` defines the following functions:
 .. function:: getmouse()
 
  After :meth:`~window.getch` returns :const:`KEY_MOUSE` to signal a mouse event, this
- method should be call to retrieve the queued mouse event, represented as a
+ method should be called to retrieve the queued mouse event, represented as a
  5-tuple ``(id, x, y, z, bstate)``. *id* is an ID value used to distinguish
  multiple devices, and *x*, *y*, *z* are the event's coordinates. (*z* is
  currently unused.) *bstate* is an integer value whose bits will be set to