Update operations.md

Author: prady0t

docs/operations.md

@@ -253,9 +253,9 @@ z[:3, :2, [1, 5]]
 
 **Package Configuration**
 
-By default, when performing something like `np.array(COO)`, we allow the array
-to be converted into a dense one. To prevent this and raise a [`RuntimeError`][]
-instead, set the environment variable `SPARSE_AUTO_DENSIFY` to `0`.
+By default, when performing something like `np.array(COO)`, we do not allow the
+array to be converted into a dense one and it raise a [`RuntimeError`][].
+To prevent this, set the environment variable `SPARSE_AUTO_DENSIFY` to `1`.
 
 If it is desired to raise a warning if creating a sparse array that takes no less
 memory than an equivalent desne array, set the environment variable