BIGTOP-4155: Add support for openEuler OS in bigtop web (#1288)

Co-authored-by: MacChen1 <mac.chenqiang@huawei.com>

Author: MacChen01

src/site/xdoc/index.xml

@@ -42,7 +42,7 @@
 			</table>
 			<br />
 			<p>
-					Bigtop support many Operating Systems, including Debian, Ubuntu, CentOS, Fedora, openSUSE and many others.
+					Bigtop support many Operating Systems, including Debian, Ubuntu, CentOS, Fedora, openSUSE, openEuler and many others.
 
 			</p>
 			<p>