Harmonize the way we link our folders in READMEs

[danielpeintner]

While looking at https://github.com/eclipse/thingweb.node-wot/pull/799 I noticed that we do not have a consistent way of linking our own folders in the repo.

see for example the main readme.

We use https://github.com/eclipse/thingweb.node-wot/blob/master/... vs. https://github.com/eclipse/thingweb.node-wot/tree/master/...

Honestly, I do not fully understand the differences/advantages between blob and tree even after reading some explanation ... Does anyone know what would be the better choice?

PPS: I would like to have a way of pointing to the current "master" branch. Meaning that if we once change from master to main we wouldn't need to change all links in the READMEs.

[danielpeintner]

If I get the information on stackoverflow right we should use blob for files and tree for directories

Somehow confusing.. I think ...