Fix column name in game rotation timeline plot

app.py

@@ -695,7 +695,7 @@ with tab5:
             game_rot_stats = check_rotation.reindex(game_rot_cols,axis="columns")
             game_rot_stats = game_rot_stats.drop_duplicates(subset='backlog_lookup')
 
-            fig = px.timeline(check_rotation, x_start="Start", x_end="Finish", y="Delta", range_x=[0,check_rotation["Finish"].max()], text='Task')
+            fig = px.timeline(check_rotation, x_start="Start", x_end="Finish", y="delta", range_x=[0,check_rotation["Finish"].max()], text='Task')
             # fig.update_yaxes(autorange="reversed") 
 
             # fig.layout.xaxis.type = 'linear'