fix typo in message property key

zanata-war/src/main/resources/messages.properties

@@ -853,7 +853,7 @@ jsf.email.coordinator.ReceivedReason=You are coordinator in '#{sendEmail.locale.
 #------ request-to-join-language email ------
 jsf.email.joinrequest.UserRequestingToJoin=Zanata user '#{sendEmail.fromName}' with id '#{sendEmail.fromLoginName}' is requesting to join the #{sendEmail.locale.localeId.id} (#{sendEmail.locale.retrieveNativeName()}) Language Team
 jsf.email.joinrequest.AddUserInstructions=You can add #{sendEmail.fromName} to the #{sendEmail.locale.localeId.id} team as translator using the "#{messages['jsf.AddTeamMember']}" action on the language team page and searching for '#{sendEmail.fromLoginName}'.
-jsf.email.joinrequest.RoleRequest=Role requested:
+jsf.email.joinrequest.RoleRequested=Role requested:
 
 #------ request-role-language email ------
 jsf.email.rolerequest.UserRequestingRole=Zanata user '#{sendEmail.fromName}' with id '#{sendEmail.fromLoginName}' is requesting the following role in #{sendEmail.locale.localeId.id} (#{sendEmail.locale.retrieveNativeName()}) Language Team: