Revert "Try to remove content license section - current yaml file fails to parse"

This reverts commit f71b45d09d.

boost.yaml

@@ -13,6 +13,13 @@ data:
         inclusion in future standards.
     license:
         module: [MIT]
+        content:
+            - Boost
+            - MIT
+            - Python
+            - LGPLv2+
+            - Public Domain
+            - BSD
     references:
         community: https://docs.pagure.org/modularity/
         documentation: https://github.com/modularity-modules/boost