Fix test that check mentions for XSS
What does this MR do?
By simply tagging @eve
the comment does not turn into a link, while by tagging @#{user.username} it turns into a link that when clicked could lead to an XSS attack, and this is what made me change the test.
Screenshots
Before
After
Does this MR meet the acceptance criteria?
Conformity
Edited by Walmyr Lima e Silva Filho