* HACKING, doc/tl/tl.tex, spot/tl/formula.hh: Typos

doc/tl/tl.tex

@@ -206,7 +206,7 @@
 
 Let $\N=\{0,1,2,\ldots\}$ denote the set of natural numbers and
 $\omega\not\in\N$ the first transfinite ordinal.  We extend the $<$
-relation from $\N$ to $\N\cup\{\omega\}$ with $\forall n\in N,\,
+relation from $\N$ to $\N\cup\{\omega\}$ with $\forall n\in \N,\,
 n<\omega$.  Similarly let us extend the addition and subtraction with
 $\forall n\in\N,\,\omega+n = \omega-n = \omega+\omega = \omega$.
 
@@ -1323,8 +1323,8 @@ rewriting arrange any PSL formula into negative normal form.
   \NOT(f \M g) & \equiv (\NOT f) \W (\NOT g)&
   \NOT(\sere{r} \Esuffix f) &\equiv \sere{r} \Asuffix \NOT f
 \end{align*}
-\noindent Recall the that negated weak closure $\nsere{r}$ is actually
-implemented as a specific operator, so it not actually prefixed by the
+\noindent Recall that the negated weak closure $\nsere{r}$ is actually
+implemented as a specific operator, so it is not actually prefixed by the
 $\NOT$ operator.
 \begin{align*}
   f \XOR g & \equiv ((\NOT f)\AND g)\OR(f\AND\NOT g) &