Merge pull request torch#340 from temerick/patch-1

correct copy-paste mistake in documentation

Author: soumith

doc/maths.md

@@ -1256,7 +1256,7 @@ in `a` and `v`.
 
 `y,i=torch.kthvalue(x,k,2)` performs the k-th value operation across rows.
 
-`y,i=torch.kthvalue(x,k,n)` performs the median operation over the dimension `n`.
+`y,i=torch.kthvalue(x,k,n)` performs the k-th value operation over the dimension `n`.
 
 
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