Update showdown slate initialization in Streamlit app to use specific names for clarity and consistency

src/streamlit_app.py

@@ -122,9 +122,9 @@ if st.button("Load/Reset Data", key='reset2'):
     slate_names_dk, slate_name_lookup_dk = define_dk_showdown_slates()
     slate_names_fd, slate_name_lookup_fd = define_fd_showdown_slates()
     DK_seed = init_DK_seed_frames('Main Slate', 10000)
-    DK_sd_seed = init_DK_SD_seed_frames(slate_names_dk[0], 10000, dk_showdown_db_translation)
+    DK_sd_seed = init_DK_SD_seed_frames("Showdown #1", 10000, dk_showdown_db_translation)
     FD_seed = init_FD_seed_frames('Main Slate', 10000)
-    FD_sd_seed = init_FD_SD_seed_frames(slate_names_fd[0], 10000, fd_showdown_db_translation)
+    FD_sd_seed = init_FD_SD_seed_frames("Showdown #1", 10000, fd_showdown_db_translation)
     dk_raw, fd_raw = init_baselines('Main Slate')
     dk_sd_raw, fd_sd_raw = init_SD_baselines('Main Slate')
     dk_id_dict = dict(zip(dk_raw.Player, dk_raw.player_ID))