Add wraps() for correct signature in docs

Author: vlad-perevezentsev

dpnp/dpnp_algo/dpnp_elementwise_common.py

@@ -248,6 +248,7 @@ def __init__(self, *args, deprecated_msg=None, **kwargs):
         super().__init__(*args, **kwargs)
         self._deprecated_msg = deprecated_msg
 
+    @wraps(DPNPUnaryFunc.__call__)
     def __call__(self, *args, **kwargs):
         if self._deprecated_msg:
             warnings.warn(