Add tabpane shortcode usage example to contributing guide

Added an example usage of the tabpane shortcode to the Contributing Guide. This helps contributors understand how to implement tabbed content in documentation, which can be useful for organizing related information like platform-specific commands or language-based code examples.

Signed-off-by: Ayush More <ayushmore42595@gmail.com>

Author: Ayushmore1214

content/en/contributing/contributing-to-docs.md

@@ -497,6 +497,20 @@ Stumptown PBR&B keytar plaid street art, forage XOXO pitchfork selvage affogato
 This is the final element on the page and there should be no margin below this.
 ```
 
+
+### TabPane Shortcode Example
+Layer5 docs support tabbed content using the `tabpane` shortcode. Here’s a basic example:
+{{< tabpane >}}
+  {{< tab name="Example Tab 1" >}}
+  This is the content inside Tab 1.
+  {{< /tab >}}
+  {{< tab name="Example Tab 2" >}}
+  This is the content inside Tab 2.
+  {{< /tab >}}
+{{< /tabpane >}}
+Use this shortcode to display platform-specific commands, language-specific code blocks, or comparisons — all in an elegant, user-friendly tab layout.
+
+
 ### Footnotes
 
 This is a superscript number for your footnote. [^1]