Clarify phrasing of view pattern error message based on feedback

Author: david-christiansen

message-index/messages/GHC-66228/index.md

@@ -6,4 +6,5 @@ introduced: 9.6.1
 ---
 
 A [view pattern](https://ghc.gitlab.haskell.org/ghc/doc/users_guide/exts/view_patterns.html) allows pattern matching on the result of a function.
-While most patterns share syntax with the corresponding expressions, there is no expression counterpart to view patterns.
+While most kinds of patterns look just like the expressions that construct the data that the pattern recognizes, view patterns don't correspond directly to an expression.
+This means that using them where an expression is expected is an error.