Fix documentation and argument name for Tensor.normal_(mean, stddev) (pytorch#652)

Author: colesbury

torch/_tensor_docs.py

@@ -991,10 +991,10 @@ def callable(a, b) -> number
 
 add_docstr(torch._C.FloatTensorBase.normal_,
            """
-normal_(generator=None, mean=0, var=1)
+normal_(generator=None, mean=0, stddev=1)
 
 Fills this tensor with elements samples from the normal distribution
-parameterized by :attr:`mean` and :attr:`var`.
+parameterized by :attr:`mean` and :attr:`stddev`.
 """)
 
 add_docstr(torch._C.FloatTensorBase.numel,

torch/csrc/generic/methods/TensorRandom.cwrap

@@ -151,7 +151,7 @@ static void THTensor_(normal_means_stddevs)(THTensor *self, THGenerator *gen, TH
       default: THPDefaultGenerator->cdata
     - arg: real mean
       default: 0
-    - arg: real var
+    - arg: real stddev
       default: 1
 ]]