Rename database from 'NBA_DFS' to 'NBA_Database' for clarity and consistency

src/database.py

@@ -9,7 +9,7 @@ def init_conn():
         if not uri:
             uri = st.secrets['mongo_uri']
         client = pymongo.MongoClient(uri, retryWrites=True, serverSelectionTimeoutMS=500000)
-        db = client["NBA_DFS"]
+        db = client["NBA_Database"]
         wnba_db = client["WNBA_DFS"]
 
         return db, wnba_db