Update grenade_launcher.dm

Removed href-tags from log_game and corrected the log message.
Removing href-tags from log_game in transfer_valve.dm

Not sure I'm doing this the best way, but I couldn't come up with a cleaner way. Suggestions are welcome!
Removing href-tags from log_game in grenade.dm

Cleaning up after Ikarrus @ 2f92f67a
Removing href-tags from log_game in say.dm
Merge pull request #1964 from Limeliz/href-fixes-round-3

Href fixes round 3