Fix wrong signature for two-argument newwin().  Found by Jacqueline Leykam on docs@.
diff --git a/Doc/library/curses.rst b/Doc/library/curses.rst
index cd1915d..314636e 100644
--- a/Doc/library/curses.rst
+++ b/Doc/library/curses.rst
@@ -377,7 +377,7 @@
    is to be displayed.
 
 
-.. function:: newwin(begin_y, begin_x)
+.. function:: newwin(nlines, ncols)
               newwin(nlines, ncols, begin_y, begin_x)
 
    Return a new window, whose left-upper corner is at  ``(begin_y, begin_x)``, and