extremely minor changes

docs/running_jobs/vsc4_queues.md

-# VSC-4 partitions and QOS
+# VSC-4 partitions and QoS
 
 On VSC-4, nodes of the same type of hardware are grouped in to partitions.
 The quality of service (QOS), formerly called *Queue* defines the maximum
@@ -47,7 +47,7 @@ The following QoS are available for all normal (=non private) projects:
     sacctmgr show user `id -u` withassoc format=user,defaultaccount,account,qos%40s,defaultqos%20s
     ```
 
-### Idle QOS
+### Idle QoS
 
 If a project runs out of compute time, jobs of this project are now
 running with low job priority and reduced maximum run time limit in the