Merge pull request #11679 from lampepfl/bishabosha-patch-1

Add TypeTest doc to sidebar on website

Author: bishabosha

docs/sidebar.yml

@@ -119,6 +119,8 @@ sidebar:
               url: docs/reference/other-new-features/explicit-nulls.html
             - title: Safe Initialization
               url: docs/reference/other-new-features/safe-initialization.html
+            - title: TypeTest
+              url: docs/reference/other-new-features/type-test.html
         - title: Other Changed Features
           subsection:
             - title: Numeric Literals