Made output use correct encoding

Author: theturboturnip

bpystubgen/tasks.py

@@ -205,7 +205,7 @@ def generate(self, dest_dir: Path, writer: Writer) -> Optional[Path]:
         with open(marker, "w"):
             pass
 
-        fout = FileOutput(destination_path=str(target))
+        fout = FileOutput(destination_path=str(target), encoding="utf-8")
 
         try:
             writer.write(self.doctree, fout)