move static content

_toc.yml

@@ -171,3 +171,4 @@ chapters:
   - file: management/index
     sections:
       - file: management/strategy
+      - file: management/redhat_product_lifecycle

management/index.md

@@ -1,6 +1,4 @@
 # Management
 
-Contents:
-
 ```{tableofcontents}
 ```

management/redhat_product_lifecycle.md

@@ -0,0 +1,6 @@
+# RedHat Product Lifecycle
+
+These pages give an overview about the RedHat product lifecycle in the upcoming years:
+
+- https://access.redhat.com/support/policy/updates/errata/
+- Red Hat Product Lifecycle Overview: [RedHat-Product-Life-Cycles.pdf](../_static/pdf/RedHat-Product-Life-Cycles.pdf)