Minor typo fixes

NEWS.txt

@@ -48,7 +48,7 @@ New Features
    contains dimensions with bad value like 0. (Frédéric B. reported by Ian G.)
 
 Sparse
- * Implement theano.sparse.mul(sparse1, sparse2) when both input don't
+ * Implement theano.sparse.mul (sparse1, sparse2) when both inputs don't
    have the same sparsity pattern. (Frederic B.)
 
 Sparse Sandbox graduate

theano/sparse/basic.py

@@ -1180,8 +1180,8 @@ class MulSS(gof.op.Op):
         assert _is_sparse(x) and _is_sparse(y)
         assert len(x.shape) == 2
         assert y.shape == x.shape
-        # This call the element-wise multiple
-        # x * y call dot...
+        # This calls the element-wise multiple
+        # x * y calls dot...
         out[0] = x.multiply(y)
 
     def grad(self, (x, y), (gz,)):