rebase and merbe

Author: BillWagner

docfx.json

@@ -77,8 +77,7 @@
                     "csharp-9.0/nullable-reference-types-specification.md",
                     "csharp-9.0/nullable-constructor-analysis.md",
                     "csharp-9.0/nullable-parameter-default-value-analysis.md",
-                    "csharp-9.0/skip-localsinit.md",
-                    "csharp-9.0/variance-safety-for-static-interface-members.md"
+                    "csharp-9.0/skip-localsinit.md"
                 ]
             },
             {

docs/csharp/specification/toc.yml

@@ -223,6 +223,8 @@ items:
     items:
     - name: Default interface methods
       href: ../../../_csharplang/proposals/csharp-8.0/default-interface-methods.md
+    - name: Variance safety for static interface members
+      href: ../../../_csharplang/proposals/csharp-9.0/variance-safety-for-static-interface-members.md
     - name: Static abstracts in interfaces
       href: ../../../_csharplang/proposals/csharp-11.0/static-abstracts-in-interfaces.md
     - name: Allow ref struct interfaces