check email id string has @ sign

Author: mustafasoylu

src/somesy/pyproject/models.py

@@ -149,7 +149,7 @@ def validate_email_format(cls, v):
                         validated.append(author)
                     else:
                         logger.warning(f"Same person {author} is added multiple times.")
-            elif " " in author and EMailAddress.validate_python(
+            elif "@" in author and EMailAddress.validate_python(
                 author.split(" ")[-1][1:-1]
             ):
                 validated.append(author)