* doc/tl/tl.tex: Typo.

doc/tl/tl.tex

@@ -865,7 +865,7 @@ is therefore a model of the formula \samp{$\sere{a\PLUS{}\CONCAT\NOT
     a}$} even though it never sees \samp{$\NOT a$}.  The same sequence
 is not a model of \samp{$\sere{a\PLUS{}\CONCAT\NOT
     a\CONCAT(a\STAR{}\ANDALT(a\STAR{}\CONCAT\NOT a\CONCAT
-    a\STAR{}))}$} because this SERE does accept any word.
+    a\STAR{}))}$} because this SERE does not accept any word.
 
 Note that the semantics of $\sere{r}$ comes from the
 $\mathsf{cl}(\cdot)$ operator defined by~\citet{dax.09.atva}.  This