Title case figure label

app.py

@@ -142,6 +142,7 @@ class RankPlotter(DataPlotter):
                   xmin=self.df['lower'],
                   xmax=self.df['upper'],
                   alpha=0.5)
+        ax.set_xlabel(ax.get_xlabel().title())
         ax.set_ylabel('')
         ax.set_yticks(self.y, self.df['model'])