Add link to my public orderbook mirror

Co-authored-by: Pulp <51127079+PulpCattel@users.noreply.github.com>

README.md

@@ -70,8 +70,9 @@ If you are running Joinmarket-Qt, you can instead use the [walkthrough](docs/JOI
 
 If you used the old version of Joinmarket, the notes in the [scripts readme](scripts/README.md) help to understand what has and hasn't changed about the scripts (warning: this refers to changes from several years ago, so may be slightly outdated).
 
-If you are looking for the available makers, run the [orderbook](docs/orderbook.md). 
-Public mainnet mirror: [JoinMarket Browser Interface Orderbook](https://nixbitcoin.org/orderbook) [(🧅 tor)](http://qvzlxbjvyrhvsuyzz5t63xx7x336dowdvt7wfj53sisuun4i4rdtbzid.onion/orderbook)
+If you are looking for the available makers, run the [orderbook](docs/orderbook.md). It's recommended to run your own orderbook locally, but there are also public mirrors:
+* https://nixbitcoin.org/orderbook (clearnet) / http://qvzlxbjvyrhvsuyzz5t63xx7x336dowdvt7wfj53sisuun4i4rdtbzid.onion/orderbook (Tor)
+* http://nnuifroxn5aolsqa2svedcskojlqfp2ygt4u42ac7njehsbemagpwiqd.onion (Tor)
 
 ### Useful third-party projects