Updating version of charts for VOLTHA 2.8

Change-Id: Ib308594ef03fac7c271fa1bb084fbd0d6d60f82e
diff --git a/overview/troubleshooting.rst b/overview/troubleshooting.rst
index f58e63c..d0e5260 100644
--- a/overview/troubleshooting.rst
+++ b/overview/troubleshooting.rst
@@ -6,6 +6,7 @@
 on how to collection information and packet dumps than it is on operations.
 
 Depending on your issue useful tips and tricks can be found:
+
 - `No ONUs are discovered <https://guide.opencord.org/profiles/seba/troubleshoot/no-onus.html>`_
 - `Can't authenticate <https://guide.opencord.org/profiles/seba/troubleshoot/no-aaa.html>`_
 - `DHCP is not working <https://guide.opencord.org/profiles/seba/troubleshoot/no-dhcp.html>`_