Meta: update repository files

See https://github.com/whatwg/spec-factory for details.

Author: annevk

LICENSE

@@ -1,61 +1,10 @@
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+
+- - - -
 
 Creative Commons Attribution 4.0 International Public License
 
@@ -375,22 +324,33 @@ Section 8 -- Interpretation.
      that apply to the Licensor or You, including from the legal
      processes of any jurisdiction or authority.
 
+- - - -
+
+BSD 3-Clause License
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