Fix link to merege request in rocketchat message

Problem description

When autoupdater sends message to rocketchat channel it contains links to created merge requests in following format:

* [title](link)

but rocketchat resolves all links in message and add icons which redirect to link with ")" at the end of it and it can not be resolve.

Possible solutions

1. add space beetwen link and ) char
2. Make links as seperate reference in format [title]: link