Update MongoDB database name in app.py from NHL_Database to MLB_Database to reflect the new data focus.

app.py

@@ -27,7 +27,7 @@ def init_conn():
 
     uri = st.secrets['mongo_uri']
     client = pymongo.MongoClient(uri, retryWrites=True, serverSelectionTimeoutMS=500000)
-    db = client["NHL_Database"]
+    db = client["MLB_Database"]
 
     gc = gspread.service_account_from_dict(credentials)