fixes typo in doc string type annotation

Co-authored-by: Copilot <[email protected]>

Author: justin-cechmanek

redisvl/query/aggregate.py

@@ -120,7 +120,7 @@ def __init__(
                 set, or tuple of strings is provided then those will be used as stopwords.
                 Defaults to "english". if set to "None" then no stopwords will be removed.
             dialect (int, optional): The Redis dialect version. Defaults to 2.
-            text_weights (Optional[Dict[str, float]): The importance weighting of individual words
+            text_weights (Optional[Dict[str, float]]): The importance weighting of individual words
                 within the query text. Defaults to None, as no modifications will be made to the
                 text_scorer score.