docs: document compactSummary option in article shortcode

exampleSite/content/docs/shortcodes/index.md

@@ -73,16 +73,16 @@ This is an error!
 | --------- | -------------------------------------------------------- |
 | `link`    | **Required.** the `.RelPermalink` to the target article. |
 | `showSummary` | **Optional.** A boolean value indicating whether to show the article summary. If not set, the site's default configuration will be used. |
-
+| `compactSummary` | **Optional.** A boolean value indicating whether to display the summary in compact mode. Default to false. |
 <!-- prettier-ignore-end -->
 
 **Example:**
 
 ```md
-{{</* article link="/docs/welcome/" */>}}
+{{</* article link="/docs/welcome/" showSummary=true compactSummary=true */>}}
 ```
 
-{{< article link="/docs/welcome/" >}}
+{{< article link="/docs/welcome/" showSummary=true compactSummary=true >}}
 
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