Merge pull request #381 from kobotoolbox/regex_email_update

Update restrict_responses.md

source/restrict_responses.md

@@ -148,7 +148,7 @@ guarantee that they are valid, only that they follow an expected pattern.</p>
 
 | **Regex**                                                                                                          | **Description**                                                          |
 | :----------------------------------------------------------------------------------------------------------------- | :----------------------------------------------------------------------- |
-| `regex(., '^[A-Za-z0-9._%+-]+@[A-Za-z0-9-]+[.][A-Za-z.]{2,}$')` or `regex(., '^([\W\d\D]+[@][\D]+[.][\D]{2,})+$')` | Restrict an input with a valid email address e.g. `example.domain.com` or `example.domain.com.np` |
+| `regex(., '^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*(\.[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*)*\.[a-zA-Z]{2,}$')` | Restrict input to valid email address (e.g., `example.domain.com` or `example.domain.com.np).` |
 
 ## Examples related to use of time inputs