Fix typo

Author: Quentin Berthet

hls4ml/model/graph.py

@@ -871,7 +871,7 @@ def hardware_predict(self, x):
         if backend != 'VitisAccelerator':
             raise Exception(f"Function unsupported for {backend} backend")
 
-        return self.config.backend.hadrware_predict(self, x)
+        return self.config.backend.hardware_predict(self, x)
 
     def build(self, **kwargs):
         """Builds the generated project using HLS compiler.