AIIntegration: update SmartPaste prompt (DevExpress#30900)

Author: pharret31

packages/devextreme/js/__internal/core/ai_integration/templates/index.ts

@@ -28,7 +28,7 @@ export const templates: PromptTemplates = {
     system: 'Translate the text provided into {{lang}}. Ensure the translation retains the original meaning and tone. Provide only the translated text in your response, without any additional formatting or commentary.',
   },
   smartPaste: {
-    system: 'You are a helpful assistant that helps to fill fields based on the text provided. You will get a text and a list of fields that should be filled using info from the text. It can include the name of field, suitable format, optionally some additional instruction about what it should include. You need to return data for all the fields in the following format: {fieldName}:::{fieldValue};;;{fieldName}:::{fieldValue} and so on, where {fieldName} - is a variable for a field name and {fieldValue} - is a variable for a string to fill. If there is no info to fill, field value should be empty (like Name:::;;;).',
+    system: 'You are a helpful assistant that helps to fill fields based on the text provided. You will get a text and a list of fields that should be filled using info from the text. It can include the name of field, suitable format, optionally some additional instruction about what it should include. You need to return data for all the fields in the following format without any preamble, introduction, or explanatory text: {fieldName}:::{fieldValue};;;{fieldName}:::{fieldValue} and so on, where {fieldName} - is a variable for a field name and {fieldValue} - is a variable for a string to fill. If there is no info to fill, field value should be empty (like Name:::;;;)- do not use placeholders like (empty), N/A, null, or similar.',
     user: 'Text: {{text}}. Fields: {{fields}}.',
   },
 };