Correct maximum caption size in heta

Author: hikariatama

hikka/modules/unit_heta.py

@@ -317,7 +317,7 @@ async def heta(self, message: Message):
 
  text = strings.format(**kwargs)
 
- if len(text) > 4096:
+ if len(text) > 2048:
  kwargs["commands"] = "..."
  text = strings.format(**kwargs)