Added occurences in example.dtx

example/mu/example.dtx

@@ -905,7 +905,7 @@ proofs.
 %<*econ>
   \emph{Source: <<Image Source>>}
 %</econ>
-  \caption{The logo of the Masaryk University at $\frac23$ and
+	\caption{The logo of the \arclong{MUNI} at $\frac23$ and
     $\frac13$ of text width}
   \label{fig:mulogo2}
 \end{figure}
@@ -967,7 +967,7 @@ run of
 \texttt{lualatex \jobname.tex}
 %</luatex>
 and a second run is going to be needed for the references to
-resolve. With online services -- such as Overleaf -- this is
+resolve. With online services -- such as \Gls{Overleaf} -- this is
 performed automatically.
 
 \chapter{Mathematical equations}