Fix: incorrect comparison operator for normalizer check

Author: luciaquirke

bergson/config.py

@@ -251,7 +251,7 @@ def __post_init__(self):
             # torch.set_float32_matmul_precision('high')
             torch.backends.cuda.matmul.allow_tf32 = True
 
-        if self.normalizer !== "none":
+        if self.normalizer != "none":
             raise NotImplementedError(
                 "We have not empirically validated optimizer normalization. "
                 "Use at your own risk. "