docs: update docs icons (#12465)

### What problem does this PR solve?

Update icons for docs.
Trailing spaces are auto truncated by the editor, does not affect real
content.

### Type of change

- [x] Documentation Update

docs/guides/agent/agent_component_reference/await_response.mdx

@@ -1,6 +1,9 @@
 ---
 sidebar_position: 5
 slug: /await_response
+sidebar_custom_props: {
+  categoryIcon: LucideMessageSquareDot
+}
 ---
 
 # Await response component
@@ -23,7 +26,7 @@ Whether to show the message defined in the **Message** field.
 
 ### Message
 
-The static message to send out. 
+The static message to send out.
 
 Click **+ Add message** to add message options. When multiple messages are supplied, the **Message** component randomly selects one to send.
 
@@ -31,9 +34,9 @@ Click **+ Add message** to add message options. When multiple messages are suppl
 
 You can define global variables within the **Await response** component, which can be either mandatory or optional. Once set, users will need to provide values for these variables when engaging with the agent. Click **+** to add a global variable, each with the following attributes:
 
-- **Name**: _Required_  
-  A descriptive name providing additional details about the variable.  
-- **Type**: _Required_  
+- **Name**: _Required_
+  A descriptive name providing additional details about the variable.
+- **Type**: _Required_
   The type of the variable:
   - **Single-line text**: Accepts a single line of text without line breaks.
   - **Paragraph text**: Accepts multiple lines of text, including line breaks.
@@ -41,7 +44,7 @@ You can define global variables within the **Await response** component, which c
   - **file upload**: Requires the user to upload one or multiple files.
   - **Number**: Accepts a number as input.
   - **Boolean**: Requires the user to toggle between on and off.
-- **Key**: _Required_  
+- **Key**: _Required_
   The unique variable name.
 - **Optional**: A toggle indicating whether the variable is optional.