Add tabpane shortcode usage example to contributing guide

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

@@ -497,6 +497,17 @@ 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
+
+{{< tabpane text=true >}}
+{{< tab name="Example Tab 1" >}}
+This is the content inside Example Tab 1.
+{{< /tab >}}
+{{< tab name="Example Tab 2" >}}
+This is the content inside Example Tab 2.
+{{< /tab >}}
+{{< /tabpane >}}
+
 ### Footnotes
 
 This is a superscript number for your footnote. [^1]