Update sparse-kde.py

Co-authored-by: Alexander Goscinski <alex.goscinski@posteo.de>

examples/neighbors/sparse-kde.py

@@ -202,7 +202,7 @@ def rij(period: np.ndarray, xi: np.ndarray, xj: np.ndarray) -> np.ndarray:
 print(f"RMSE_kde = {RMSE_kde:.2e}")
 
 # %%
-# We can see that the fitted model can perfectly capture the original one. Eventhough we
+# We can see that the fitted model can perfectly capture the original one. Even though we
 # have not specified the number of the Gaussians, it can still perform well. This
 # allows us to fit distributions of the data automatically at a comparable quality
 # within a much shorter time than scipy.