docs(blog): explain confusion matrix more concisely

Co-authored-by: Deepyaman Datta <deepyaman.datta@utexas.edu>

docs/posts/classification-metrics-on-the-backend/index.qmd

@@ -40,8 +40,8 @@ The easiest way to break down how this works is to look at a confusion matrix.
 
 A confusion matrix is a table used to describe the performance of a classification
 model on a set of data for which the true values are known. As binary classification
-only involves two categories, the confusion matrix is a simple 2x2 table where each
-cell shows the count of true positives, false positives, false negatives, and true
+only involves two categories, the confusion matrix is a simple 2x2 table showing
+the count of true positives, false positives, false negatives, and true
 negatives.
 
 ![](confusion_matrix.png)