Update top_k_letters.py
@@ -5,7 +5,7 @@ This example shows how to use a window transform in order to display only the
top K categories by number of entries. In this case, we rank the characters in
the first paragraph of Dickens' *A Tale of Two Cities* by number of occurances.
"""
-# category: case studies
+# category: other charts
import altair as alt
import pandas as pd
import numpy as np
