Hey @Brian_Morin
Though I am not sure whether those link your refer to are inside a table or not. If its a table you can open a new table that will be only for emojis, where youll have to upload the emojis as image and then do a “relation” column for the emoji you would like that will appear - Here you can see a way better explanation than mine
Then another thing I did is to create a button (which can be both inside a column or free in the doc) that open the link you´ll put and there is an option of Github icon for the button (though if its in a table it will be for the whole column).
*Not an expert over here but still I hope I managed to help a bit