Fix wording

Author: mingxwa

docs/spec/skills_as_view.md

@@ -12,7 +12,7 @@ using as_view = /* see below */;
 
 The alias template `as_view` modifies a specialization of [`basic_facade_builder`](basic_facade_builder/README.md) to allow implicit conversion from [`proxy`](proxy/README.md)`<F>` to [`proxy_view`](proxy_view.md)`<F>`, where `F` is a built [facade](facade.md) type.
 
-Let `p` be a value of type `proxy<F>`, `ptr` be the contained value of `p` (if any), the conversion from type `proxy<F>&` to type `proxy_view<F>` is equivalent to `return make_proxy_view(*ptr)` if `p` contains a value, or otherwise equivalent to `return nullptr`.
+Let `p` be a value of type `proxy<F>`, `ptr` be the contained value of `p` (if any), the conversion from type `proxy<F>&` to type `proxy_view<F>` is equivalent to `return make_proxy_view<F>(*ptr)` if `p` contains a value, or otherwise equivalent to `return nullptr`.
 
 ## Notes