DOC: update paper

paper/paper.md

@@ -120,6 +120,8 @@ The following outputs will be generated by the `graphbin` subcommand.
 
 ## `graphbin2`
 
+### Tool/processing function
+
 The formatted initial binning result from the `prepare` subcommand can be improved by providing to GraphBin2 [@Mallawaarachchi2:2020; @Mallawaarachchi:2021] using the subcommand `graphbin2` (\autoref{fig1}).
 
 ### Inputs
@@ -161,7 +163,7 @@ The following outputs will be generated by the `visualise` subcommand.
 * Figure of the assembly graph with the initial binning result
 * Figure of the assembly graph with the refined binning result
 
-An example is shown in \autoref{fig2} for the Sim-5G+metaSPAdes dataset [@Mallawaarachchi2:2020; @Mallawaarachchi:2021] containing five bacterial species. 
+An example visualisation for the Sim-5G+metaSPAdes dataset [@Mallawaarachchi2:2020; @Mallawaarachchi:2021] containing five bacterial species is shown in \autoref{fig2}. 
 
 ![Visualisation of the assembly graph with the initial binning result from MetaCoAG (left) and final binning result from GraphBin (right) for the Sim-5G+metaSPAdes dataset. The vertices represent contigs and edges represent connections in the assembly graph. The five colours represent the five bins and the white vertices represent unbinned contigs.\label{fig2}](visualisation.svg){width=100%}