[RTM-V1] Project link incomplete or wrong on silkscreen
For the RTM boards (used in both BLO and RS485 converters), there is
only the link to the BLO board projects
(https://www.ohwr.org/project/conv-ttl-blo). This should be fixed in one
of two ways:
1. list only ohwr.org
2. list both the ttl-blo and ttl-rs485 projects on the silkscreen.