Suggestion to avoid confusing characters in short links

[spokeswamp]

Some characters in short links can cause confusion, for example when sending a pob in a chat.
In particular, characters such as L (l), I (i), O (o), 1, 0

To improve clarity and reduce potential errors, I suggest avoiding these characters in the function that generates the short link.
This small change can make links much easier to read and use.