updated textual description

Co-authored-by: Akshay Agrawal <[email protected]>

polars/01_why_polars.py

@@ -188,7 +188,7 @@ def _(mo):
         df = pd.read_csv("large_dataset.csv")
         ```
 
-        In Polars, the same operation is seamless:
+        In Polars, the same operation runs quickly, without memory pressure:
 
         ```python
         df = pl.read_csv("large_dataset.csv")