fixing quotes

Author: trevorcampbell

source/classification2.md

@@ -675,15 +675,15 @@ from sklearn.metrics import recall_score, precision_score
 precision_score(
     y_true=cancer_test["Class"],
     y_pred=cancer_test["predicted"],
-    pos_label='Malignant'
+    pos_label="Malignant"
 )
 ```
 
 ```{code-cell} ipython3
 recall_score(
     y_true=cancer_test["Class"],
     y_pred=cancer_test["predicted"],
-    pos_label='Malignant'
+    pos_label="Malignant"
 )
 ```
 The output shows that the estimated precision and recall of the classifier on the test