Typo.

Doc/lib/liboperator.tex

@@ -162,7 +162,7 @@ Return \var{a} \code{-} \var{b}.
 \begin{funcdesc}{truediv}{a, b}
 \funcline{__truediv__}{a, b}
 Return \var{a} \code{/} \var{b} when \code{__future__.division} is in
-effect.  This is also known as division.
+effect.  This is also known as ``true'' division.
 \versionadded{2.2}
 \end{funcdesc}