Add figure label

Author: dokempf

paper.tex

@@ -416,6 +416,7 @@ \section{Existing Implementations}
 We asked departments for the composition of their service portfolio - the results are shown in figure~\ref{fig:survey}.
 
 \begin{figure}
+\label{fig:survey}
 \centering
 \includegraphics[width=\textwidth]{./group_composition_plot/group_composition_plot.pdf}
 \caption{National and international examples of RSE departments and their service portfolio: Heidelberg and Princeton offer development services, whereas Jena and Reading focus mostly on teaching and consultation services.}