Merge pull request #15334 from lampepfl/language-reference-backport

Backport changes from stable documentation branch

Author: julienrf

docs/_docs/reference/experimental/overview.md

@@ -18,8 +18,8 @@ They are enabled by importing the feature or using the `-language` compiler flag
 
 ### Experimental language imports
 
-In general, experimental language features can be imported in an experimental scope (see [experimental definitions](../other-new-features/experimental-defs.md).
-They can be imported at the top-level if all top-level definitions are @experimental.
+In general, experimental language features can be imported in an experimental scope (see [experimental definitions](../other-new-features/experimental-defs.md)).
+They can be imported at the top-level if all top-level definitions are `@experimental`.
 
 ### Experimental language features supported by special compiler options