Update misc_docs/syntax/language_polyvar.mdx

Co-authored-by: Patrick Ecker <[email protected]>

Author: kevanstannard

misc_docs/syntax/language_polyvar.mdx

@@ -8,7 +8,7 @@ category: "languageconstructs"
 
 [Polymorphic variants](/docs/manual/latest/polymorphic-variant) (or _poly variants_) are the structurally typed equivalent of [variants](/docs/manual/latest/variant).
 
-Their usage doesn't require any explicit type definition, and they not coupled to any specific module. The compiler will infer the type on demand, and compare poly variants by their value, instead of their type name.
+In comparison to nominally typed variants, their values don't require any explicit type definition, and are not coupled to any specific module. The compiler will infer the type on demand, and compare poly variants by their value, instead of their type name.
 
 However, using the `[ #value ]` syntax you can to define a _closed poly variant type_ with an exact set of values, known as constructors.