Update Collection-of-Custom-Formats-for-RadarrV3.md

```yml
- Fixed: CF P2P-HQ [Remux Groups] faulty formatting for KRaLiMaRKo
```
thnx to @DavidW#9531 for reporting

docs/Radarr/V3/Collection-of-Custom-Formats-for-RadarrV3.md

@@ -2589,7 +2589,7 @@ A collection of P2P groups that are known for their high quality releases
                 "negate": false,
                 "required": false,
                 "fields": {
-                    "value": "-FraMeSToR|-EPSiLON|//bKRaLiMaRKo//b"
+                    "value": "-FraMeSToR|-EPSiLON|\\bKRaLiMaRKo\\b"
                 }
             }
         ]