Update best-practices.md

Author: jaep3347

articles/ai-services/content-understanding/concepts/best-practices.md

@@ -89,10 +89,15 @@ By default, Content Extraction information such as speech transcripts, document
 
 ## Classifier category names and descriptions
 
-To improve the classifier and splitting accuracy, it's important to give a good category name and description with context. For example:
+To improve the classifier and splitting accuracy, it's important to give a good category name and description with context.
 
-* Common titles for category names (ex. Annual Financial Report, SEC Form 10-K)
-* Semantic definition of the category for descriptions (ex. receipts for expense reporting)
-* Common layout of the initial page in the description (two-column form)
-* Key content that uniquely identifies a category as a description ("2025" on the upper right)
+ #####   ***Example 8***
+
+   * For category names, make sure to use common titles (ex. Annual Financial Report, SEC Form 10-K).
+     
+   * For category descriptions, make sure to give context that distinguishes one category from another.
+
+     * Semantic definition: for example, `receipts for expense reporting`
+     * Key content: any content that can uniquely identify a category, such as  `2025` on tax forms to distinguish from older tax forms
+     * Common layout: layout that is distinguishable from others, such as `two-column form` or filled/unfilled checkbox