Add suggested 'The' at start of sentence

Co-authored-by: Hans Olsson <HansOlsson@users.noreply.github.com>

chapters/equations.tex

@@ -294,7 +294,7 @@ \subsubsection{Restrictions on Equations within When-Equations}\label{restrictio
 \item
   Operators \lstinline!assert!, \lstinline!terminate!, \lstinline!reinit!.
 \item
-  \lstinline!for!- and \lstinline!if!-equations if the equations within the \lstinline!for!- and \lstinline!if!-equations satisfy these requirements.
+  The \lstinline!for!- and \lstinline!if!-equations if the equations within the \lstinline!for!- and \lstinline!if!-equations satisfy these requirements.
 \item
   The different branches of \lstinline!when!/\lstinline!elsewhen! must have the same set of component references on the left-hand side.
 \item