Addition of admin point on gitlab issues

Lectures/L05_ProgramFamilies/ProgramFamilies.tex

@@ -92,7 +92,10 @@
 \item Spell check
 \item Replace ``in order to'' by ``to''
 \item Use a \texttt{.gitignore} file
-\item Look at \href{https://gitlab.cas.mcmaster.ca/smiths/cas741/blob/master/Repos.xlsx}{work of class mates}
+\item Look at
+  \href{https://gitlab.cas.mcmaster.ca/smiths/cas741/blob/master/Repos.xlsx}{work
+    of class mates}
+\item Include the commit hash that closes the issue
 \ei
 
 \end{frame}