Fix based on the gemini review

Author: gonzalesedwin1123

docs/user_guide/administration/custom_fields.md

@@ -68,7 +68,7 @@ Since this is a standard custom field, you do not need to provide computation lo
 
 - **Required**: Check this box if you want to make this field mandatory for all records.
 - **Readonly**: Check this box to prevent users from editing the field's value through the user interface.
-- **Index**: For performance optimization on large datasets, a developer or system administrator can enable this.
+- **Index**: Check this box to create a database index on this field. This can improve performance for filtering and searching on large datasets. This option should typically be managed by a developer or system administrator.
 - **Copied**: Determines if the value of this field is copied when a record is duplicated.
 
 For our example, we will leave these options unchecked.
@@ -86,7 +86,7 @@ Once all properties are configured, save the new field.
 
 ### Verify the Custom Field
 
-1. To verify, open any record in the **Individuals** list view.
+1. To verify that the field was created successfully, open any record in the **Individuals** list view.
 
 ![](custom_fields/step06_select_individual.jpg)