Move newly added item so that it does not break the list lexical order.

wiki/src/support/known_issues.mdwn

@@ -400,9 +400,9 @@ This issue has been reported on the following hardware:
     - MacBook Pro 10,2
     - MacBook Pro Retina 11,1 (late 2013)
     - MacBook Pro Retina 13-inch (early 2015)
+  - Hewlett-Packard HP ENVY x360
   - Hewlett-Packard HP Pavilion dv6 Notebook PC
   - Hewlett-Packard HP ProBook 450 G0
-  - Hewlett-Packard HP ENVY x360
   - Lenovo ThinkPad X61, only on emergency shutdown when pulling out the
     USB stick
   - Lenovo ThinkPad X220