Update chapters/packages.tex

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

chapters/packages.tex

@@ -351,7 +351,7 @@ \section{Multilingual Descriptions}\label{multilingual-descriptions}
 
 Two kind of files in \textcite{GettextManual} format have to be provided:
 \begin{enumerate}
-\item Template file \filename{$\mathit{LibraryName}$.pot}, as the resource \filename{modelica://$\mathit{LibraryName}$/Resources/Language/$\mathit{LibraryName}$.pot}.
+\item Template file \filename{$\mathit{LibraryName}$.pot} (Portable Object Template), as the resource \filename{modelica://$\mathit{LibraryName}$/Resources/Language/$\mathit{LibraryName}$.pot}.
 It describes all translatable strings in the library, but does not contain any translations.
 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} (Portable Object), as the resource \filename{modelica://$\mathit{LibraryName}$/Resources/Language/$\mathit{LibraryName}$.$\mathit{language}$.po}.