Adjust note contents to fix rendering

doc/administration/high_availability/nfs.md

@@ -39,13 +39,8 @@ options:
 
 ### Improving NFS performance with GitLab
 
-NOTE: **Note:**
-This is only available starting in certain versions of GitLab:
-  * 11.5.11
-  * 11.6.11
-  * 11.7.12
-  * 11.8.8
-  * 11.9.0 and up (e.g. 11.10, 11.11, etc.)
+NOTE: **Note:** This is only available starting in certain versions of GitLab: 11.5.11,
+11.6.11, 11.7.12, 11.8.8, 11.9.0 and up (e.g. 11.10, 11.11, etc.)
 
 If you are using NFS to share Git data, we recommend that you enable a
 number of feature flags that will allow GitLab application processes to