linuxonpower specification add missing frontmatter

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

content/specifications/linuxonpower.md

@@ -1,6 +1,14 @@
 ---
-
+title: Linux on POWER Architecture Reference
-
+group: systemsoftware
+tags:
+  - software
+  - linux
+  - operatingsystem
+  - distribution
+  - architecture
+date: 2020-07-02
+draft: false
 ---
 
 The purpose of this document is to detail a stable platform architecture to be used by platforms defined by the POWER ISA Specification.