Update Showdown Contest Sims to reflect correct slate names and options in Streamlit app for improved user clarity.

src/streamlit_app.py

@@ -546,7 +546,7 @@ if selected_tab == "Regular Slate Contest Sims":
                 )
 
 if selected_tab == "Showdown Contest Sims":
-    dk_raw, fd_raw = init_SD_baselines('Main Slate')
+    dk_raw, fd_raw = init_SD_baselines('Showdown #1')
     raw_baselines = dk_raw
     column_names = dk_columns
     with st.expander("Info and Filters"):
@@ -555,7 +555,7 @@ if selected_tab == "Showdown Contest Sims":
             sim_site_var2 = st.radio("What site are you working with?", ('Draftkings', 'Fanduel'), key='sim_site_var2')
 
         with slate_data_col:
-            sim_slate_var2 = st.radio("Which data are you loading?", ('Main Slate', 'Secondary Slate'), key='sim_slate_var2')
+            sim_slate_var2 = st.radio("Which data are you loading?", ('Showdown #1', 'Showdown #2', 'Showdown #3'), key='sim_slate_var2')
             
         with contest_size_col:
             contest_var2 = st.selectbox("What contest size are you simulating?", ('Small', 'Medium', 'Large'), key='contest_var2')