Add suggested 'The' at start of sentence

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

chapters/packages.tex

@@ -44,7 +44,7 @@ \section{Importing Definitions from a Package}\label{importing-definitions-from-
 It is the only way of referring to definitions declared in some other package for use inside an encapsulated package or class.
 
 \begin{nonnormative}
-\lstinline!import!-clauses in a package or class fill the following two needs:
+The \lstinline!import!-clauses in a package or class fill the following two needs:
 \begin{itemize}
 \item
   Making definitions from other packages available for use (by shorter names) in a package or class.