fix: generalized date string in example log path

slides/creators/A_First_Workflow.tex

@@ -230,7 +230,7 @@ \subsection{A first Step or ``Rule''}
   You should see the expected output (\altverb[Bash]{ls}) and lines which reads:
   \begin{lstlisting}[style=Plain, basicstyle=\footnotesize]
 1 of 1 steps (100%) done
-Complete log: .snakemake/log/2022-09-17T145657.968906.snakemake.log
+Complete log: .snakemake/log/<date>T<timestring>.snakemake.log
   \end{lstlisting}
 \end{frame}