fix branch bug

Signed-off-by: weichen <niweichen@chinamobile.com>
Change-Id: I0401af4ae1e3ada6cf34fdf362f1ada32a4603fd
diff --git a/docs/conf.yaml b/docs/conf.yaml
index 432cc07..8fd5832 100644
--- a/docs/conf.yaml
+++ b/docs/conf.yaml
@@ -3,4 +3,5 @@
 project: oran
 
 # Change this to ReleaseBranchName to modify the header
-default-version: latest
+version: Amber
+