Unify all sensitive value plan output as "(sensitive value)"

Previously, there was mixed usage of "(sensitive)" and "(sensitive value)" and even though it was more common to see "(sensitive)", the thought is that it's a value we are hiding rather than describing something already shown.

website/docs/language/expressions/function-calls.mdx

@@ -63,11 +63,11 @@ the `keys()` function will result in a list that is sensitive:
 ```shell
 > local.baz
 {
-  "a" = (sensitive)
+  "a" = (sensitive value)
   "b" = "dog"
 }
 > keys(local.baz)
-(sensitive)
+(sensitive value)
 ```
 
 ## When Terraform Calls Functions