Fix yamlint error

- Focus on indentation error
- Fix broken links in READMD

Change-Id: I37cca10f8d40f89b2b062c2e572772034ddcd09c
diff --git a/jjb/verify/voltha-bbsim.yaml b/jjb/verify/voltha-bbsim.yaml
index c947e9b..18c0332 100644
--- a/jjb/verify/voltha-bbsim.yaml
+++ b/jjb/verify/voltha-bbsim.yaml
@@ -9,7 +9,7 @@
       - 'verify-voltha-bbsim-jobs':
           branch-regexp: '{all-branches-regexp}'
       - 'publish-voltha-bbsim-jobs':
-            branch-regexp: '{all-branches-regexp}'
+          branch-regexp: '{all-branches-regexp}'
 
 - job-group:
     name: 'verify-voltha-bbsim-jobs'