extend maintenance banner

app.py

@@ -247,7 +247,7 @@ def request_payload(query, language, exact_search, num_results=10, received_resu
 
 title = """<p style="text-align: center; font-size:28px"> 🌸 🔎 ROOTS search tool 🔍 🌸 </p>"""
 description = """
-# We're running maintenance works on the exact search index, so it may not work properly until the end of the day, Monday 27th of March.
+# We're running maintenance works on the exact search index, so it may not work properly until the end of the day, Tuesday 28th of March.
 
 
 The ROOTS corpus was developed during the [BigScience workshop](https://bigscience.huggingface.co/) for the purpose