You could place additional links in a block code with back ticks like this: https://discuss.python.org/ so that they can be at least easily copy-pasted if not clickable.
I guess you could place additional links in follow-up posts.
I guess you need to reach a higher so-called “trust level” by interacting with this site over time.
You need to use this site more so that you gain a higher trust level.
For example view topics. I’m not a moderator here so I’m not aware of the requirements to get to trust level 1, I think you will be on trust level 0.
Have a look in your profile for the trust level you have.
Click on ICON on top rigth of page.
Click on Profile icon (the head+shoulders icon)
Click on Summary
Click on Expand
You should see a line that appear that include your trust level.
When you are level 1 you will be able to post more links.