Typo: coplete --> complete

This closes SF bug #129759.

Doc/ref/ref8.tex

@@ -28,7 +28,7 @@ described in the next section.
 The interpreter may also be invoked in interactive mode; in this case,
 it does not read and execute a complete program but reads and executes
 one statement (possibly compound) at a time.  The initial environment
-is identical to that of a coplete program; each statement is executed
+is identical to that of a complete program; each statement is executed
 in the namespace of \module{__main__}.
 \index{interactive mode}
 \refbimodindex{__main__}