Fix broken "blurb" entry in properties file
Add the original `blurb` entry back with the "slave" term changed to "agente".
Part of the entry was removed in commit
leaving an invalid multi-line entry behind.
Examine=
Dismiss=
-# <a href="https://jenkins.io/redirect/security-144">Please read the documentation</a> and consider turning it on.
+blurb=O agente para o master security subsystem est\u00e1 desligado. \
<a href="https://jenkins.io/redirect/security-144">Por favor leia a documenta\u00e7\u00e3o</a> e ligue novamente.
