Chat/Form: update new demo descriptions (#31958)

Author: vladaskorohodova

apps/demos/Demos/Chat/FileAttachments/description.md

@@ -1,21 +1,21 @@
-DevExtreme Chat supports file attachments. When this feature is activated ([fileUploaderOptions](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#fileUploaderOptions).**uploadFile** is specified), an “Attach” button appears in the message input field, allowing users to add files to their messages. 
+The DevExtreme Chat allows users to attach files. When this feature is activated ([fileUploaderOptions](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#fileUploaderOptions).**uploadFile** is specified), an “Attach” button appears in the message input field, allowing users to add files to their messages. 
 
 When users attach files, each file is displayed in the input area with a file-type icon, basic details (name and size), upload status, and an option to remove files before sending.
 <!--split-->
 
-You can further customize the file upload process with [fileUploaderOptions](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#fileUploaderOptions) properties:
+You can customize the file upload process with the following [fileUploaderOptions](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#fileUploaderOptions) properties:
 
 - **maxFileSize**    
-Specifies the maximum allowed file size.
+Specifies maximum allowed file size.
 - **minFileSize**    
-Specifies the minimum allowed file size.
+Specifies minimum allowed file size.
 - **multiple**    
 When set to `false`, limits uploads to a single file.
 - **allowedFileExtensions**    
 Restricts accepted file types.
 
 For the complete list of configuration options, refer to the following API section: [fileUploaderOptions](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#fileUploaderOptions).
 
-The [Attachment](/Documentation/ApiReference/UI_Components/dxChat/Types/Attachment/) type includes `name` and `size` fields. To add custom fields (such as `url` in this demo), handle the [onMessageEntered](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#onMessageEntered) event and update the message object’s [attachments](/Documentation/ApiReference/UI_Components/dxChat/Types/TextMessage/#attachments) array as needed. You can use this handler to save files to your server.
+[Attachment](/Documentation/ApiReference/UI_Components/dxChat/Types/Attachment/) type includes `name` and `size` fields. To add custom fields (such as `url` in this demo), handle the [onMessageEntered](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#onMessageEntered) event and update the message object’s [attachments](/Documentation/ApiReference/UI_Components/dxChat/Types/TextMessage/#attachments) array as needed. You can use this handler to save files to your server.
 
 After a user sends a message, attachments appear in the corresponding message bubble. To allow users to download attachments, implement the [onAttachmentDownloadClick](/Documentation/ApiReference/UI_Components/dxChat/Configuration/#onAttachmentDownloadClick) event handler. You can define custom download logic within the handler.

apps/demos/Demos/Form/SmartPaste/description.md

@@ -1,11 +1,11 @@
-The DevExtreme Form ships with AI-powered **Smart Paste** functionality. When a user copies unstructured text from external sources such as documents, spreadsheets, web pages, or emails, **Smart Paste** processes the clipboard data and populates related form fields.
+The DevExtreme Form ships with AI-powered **Smart Paste** functionality. When a user copies unstructured text from external sources such as documents, spreadsheets, web pages, or emails, **Smart Paste** processes clipboard data and populates related form fields automatically.
 <!--split-->
 
-Use the following APIs to enable **Smart Paste** in the Form component:
+Use the following APIs to activate **Smart Paste** in our Form component:
 
 - [aiIntegration](/Documentation/ApiReference/UI_Components/dxForm/Configuration/#aiIntegration) - accepts an [AIIntegration](/Documentation/ApiReference/Common_Types/AIIntegration/) object that contains AI Service settings.
-- *'smartPaste'* – adds a built-in **Smart Paste** button to the Form (see [name](/Documentation/ApiReference/UI_Components/dxForm/Types/#FormPredefinedButtonItem) for more details). To initiate this functionality from code, call the [smartPaste(text)](/Documentation/ApiReference/UI_Components/dxForm/Methods/#smartPastetext) method. This demo shows how to use this method to implement a custom shortcut that activates **Smart Paste**.
+- *'smartPaste'* – adds a built-in **Smart Paste** button to the Form (see [name](/Documentation/ApiReference/UI_Components/dxForm/Types/#FormPredefinedButtonItem) for additional information). To use this capability in code, call the [smartPaste(text)](/Documentation/ApiReference/UI_Components/dxForm/Methods/#smartPastetext) method. This sample leverages this method and implements a custom shortcut to activate **Smart Paste**.
 
 Configure each Form item using [aiOptions](/Documentation/ApiReference/UI_Components/dxForm/Item_Types/SimpleItem/aiOptions/):
 - **disabled** - prevents AI-generated text from being pasted into this item.
-- **instruction** - specifies the item instruction for the AI service.
+- **instruction** - specifies item instruction for the AI service.