Added a test loot table for later testing. Also fixed a small issue in the Routing Node documentation.

src/main/resources/assets/bloodmagic/loottables/bm_loot_table.json

@@ -0,0 +1,20 @@
+{
+    "pools": [
+        {
+            "rolls": 1,
+            "entries": [
+                {
+                    "type": "item",
+                    "name": "minecraft:stone",
+                    "weight": 3,
+                    "functions": [
+                        {
+                            "function": "set_data",
+                            "data": 0
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+}