Fix typos

src/product_tree.rs

@@ -272,7 +272,7 @@ impl ProductCircuitEvalProofBatched {
       .collect::<Vec<Scalar>>();
     let mut rand = Vec::new();
     for layer_id in (0..num_layers).rev() {
-      // prepare paralell instance that share poly_C first
+      // prepare parallel instance that share poly_C first
       let len = prod_circuit_vec[0].left_vec[layer_id].len()
         + prod_circuit_vec[0].right_vec[layer_id].len();
 

src/scalar/ristretto255.rs

@@ -454,7 +454,7 @@ impl Scalar {
     //
     // and computing their sum in the field. It remains to see that arbitrary 256-bit
     // numbers can be placed into Montgomery form safely using the reduction. The
-    // reduction works so long as the product is less than R=2^256 multipled by
+    // reduction works so long as the product is less than R=2^256 multiplied by
     // the modulus. This holds because for any `c` smaller than the modulus, we have
     // that (2^256 - 1)*c is an acceptable product for the reduction. Therefore, the
     // reduction always works so long as `c` is in the field; in this case it is either the