fixing filtering label

tabs/daily_graphs.py

@@ -97,10 +97,10 @@ def plot_daily_metrics(
         yaxis_title = "Total gross profit per trader (xDAI)"
 
     color_discrete_sequence = ["purple", "goldenrod", "darkgreen"]
-    if trader_filter == "agent":
+    if trader_filter == "Olas":
         color_discrete_sequence = ["darkviolet", "goldenrod", "green"]
         trades_filtered = trades_df.loc[trades_df["staking"] != "non_agent"]
-    elif trader_filter == "non_agent":
+    elif trader_filter == "non_Olas":
         trades_filtered = trades_df.loc[trades_df["staking"] == "non_agent"]
     else:
         trades_filtered = trades_df