Improve illustration example in Blabber wiki

Author: Pyrofab

public/wiki/blabber/index.md

@@ -287,10 +287,11 @@ Here is the JSON object used to create the "conversation" in the above screensho
       {
         "type": "blabber:entity",
         "entity": "@interlocutor",
-        "x1": 0,
-        "y1": 80,
-        "x2": 100,
-        "y2": 180,
+        "anchor": "spot_1",
+        "x1": -110,
+        "y1": -100,
+        "x2": -10,
+        "y2": 0,
         "size": 100,
         "y_offset": 0.5,
         "stare_at_x": 50,
@@ -299,10 +300,11 @@ Here is the JSON object used to create the "conversation" in the above screensho
       {
         "type": "blabber:entity",
         "entity": "@s",
-        "x1": 100,
-        "y1": 80,
-        "x2": 200,
-        "y2": 180,
+        "anchor": "spot_1",
+        "x1": -10,
+        "y1": -100,
+        "x2": 90,
+        "y2": 0,
         "size": 100,
         "y_offset": 0.5,
         "stare_at_x": -50,