Update app.py

app.py

@@ -13,7 +13,7 @@ def app():
     st.write("This app displays a Treemap chart of game mechanics.")
 
         
-    game_mechanics := ["Action Queue ⏱️", "Action Retrieval 🔍", 
+    game_mechanics = ["Action Queue ⏱️", "Action Retrieval 🔍", 
                               "Campaign / Battle Card Driven 🗃️", "Card Play Conflict Resolution 💳🤝", 
                               "Communication Limits 🙊", "Cooperative Game 🤝👥", "Critical Hits and Failures 💥💔", 
                               "Deck Construction 🎴🛠️", "Grid Movement 🗺️", "Hand Management 🖐️📊",