Fix 5-1 df.corr() call to match 2.0 default parameters

5-Clustering/1-Visualize/README.md

@@ -258,7 +258,7 @@ Note, when the top genre is described as 'Missing', that means that Spotify did
 1. Do a quick test to see if the data correlates in any particularly strong way:
 
     ```python
-    corrmat = df.corr()
+    corrmat = df.corr(numeric_only=True)
     f, ax = plt.subplots(figsize=(12, 9))
     sns.heatmap(corrmat, vmax=.8, square=True)
     ```