docs: update section about Enum using reserved keywords (#22944)

Author: felipensp

doc/docs.md

@@ -3440,18 +3440,17 @@ The enum type can be any integer type, but can be omitted, if it is `int`: `enum
 Enum match must be exhaustive or have an `else` branch.
 This ensures that if a new enum field is added, it's handled everywhere in the code.
 
-Enum fields cannot re-use reserved keywords. However, reserved keywords may be escaped
-with an @.
+Enum fields can re-use reserved keywords:
 
 ```v
 enum Color {
-	@none
+	none
 	red
 	green
 	blue
 }
 
-color := Color.@none
+color := Color.none
 println(color)
 ```