Update chapters/packages.tex

Co-authored-by: Thomas Beutlich <modelica@tbeu.de>

chapters/packages.tex

@@ -356,7 +356,7 @@ \section{Multilingual Descriptions}\label{multilingual-descriptions}
 The pattern \filename{$\mathit{LibraryName}$} denotes the toplevel class name of the library.
 \item One file for each supported language with the name \filename{$\mathit{LibraryName}$.$\mathit{language}$.po}, as the resource \filename{modelica://$\mathit{LibraryName}$/Resources/Language/$\mathit{LibraryName}$.$\mathit{language}$.po}.
 This file is a copy of the associated template file, but extended with the translations in the specified language.
-The pattern \filename{$\mathit{language}$} stands for the ISO 639-1 language code, e.g., \filename{de} or \filename{en}.
+The pattern \filename{$\mathit{language}$} stands for the ISO 639-1 language code, e.g., \filename{de} or \filename{sv}.
 \end{enumerate}
 
 The detailed format of these files is described in \textcite{GettextManual}.