doc(type-args): mention order and fix 1st sentence

Author: robstoll

docs/docs/reference/other-new-features/named-typeargs.md

@@ -5,7 +5,7 @@ title: "Named Type Arguments"
 
 **Note:** This feature is implemented in Dotty, but is not expected to be part of Scala 3.0.
 
-Type arguments of methods can now be named, as well as by position. Example:
+Type arguments of methods can now be specified by name as well as by position. Example:
 
 ``` scala
 def construct[Elem, Coll[_]](xs: Elem*): Coll[Elem] = ???
@@ -15,8 +15,10 @@ val xs2 = construct[Coll = List](1, 2, 3)
 ```
 
 Similar to a named value argument `(x = e)`, a named type argument
-`[X = T]` instantiates the type parameter `X` to the type `T`. Type
-arguments must be all named or un-named, mixtures of named and
+`[X = T]` instantiates the type parameter `X` to the type `T`.
+Named type arguments do not have to be in order (see `xs1` above) and 
+unspecified arguments are inferred by the compiler (see `xs2` above).
+Type arguments must be all named or un-named, mixtures of named and
 positional type arguments are not supported.
 
 ## Motivation