Correct polyvar inferred type wording

Author: chenglou

pages/docs/manual/latest/polymorphic-variant.mdx

@@ -104,7 +104,7 @@ function render(myColor) {
 
 </CodeTab>
 
-That `myColor` parameter's type is inferred to be `[#red | #green | #yellow]`, and is unrelated to the `color` type. If you intended `myColor` to be of type `color`, annotate it as `myColor: color` in any of the places.
+That `myColor` parameter's type is inferred to be `#red`, `#green` or `#yellow`, and is unrelated to the `color` type. If you intended `myColor` to be of type `color`, annotate it as `myColor: color` in any of the places.
 
 ## Constructor Arguments