fix parameter names in Async.Parallel & Async.Choice.

src/fsharp/FSharp.Core/control.fsi

@@ -264,7 +264,7 @@ namespace Microsoft.FSharp.Control
         /// The overall computation will respond to cancellation while executing the child computations.
         /// If cancelled, the computation will cancel any remaining child computations but will still wait
         /// for the other child computations to complete.</remarks>
-        /// <param name="computationList">A sequence of distinct computations to be parallelized.</param>
+        /// <param name="computations">A sequence of distinct computations to be parallelized.</param>
         /// <returns>A computation that returns an array of values from the sequence of input computations.</returns>
         static member Parallel : computations:seq<Async<'T>> -> Async<'T[]>
 
@@ -279,7 +279,7 @@ namespace Microsoft.FSharp.Control
         /// The overall computation will respond to cancellation while executing the child computations.
         /// If cancelled, the computation will cancel any remaining child computations but will still wait
         /// for the other child computations to complete.</remarks>
-        /// <param name="computationList">A sequence of computations to be parallelized.</param>
+        /// <param name="computations">A sequence of computations to be parallelized.</param>
         /// <returns>A computation that returns the first succeeding computation in the sequence of input computations.</returns>
         static member Choice : computations:seq<Async<'T option>> -> Async<'T option>