Fixed comment typo

Author: Chris Martinez

src/Common/Versioning/ApiVersionModel.cs

@@ -197,7 +197,7 @@ public ApiVersionModel(
         /// </summary>
         /// <value>A <see cref="IReadOnlyList{T}">read-only list</see> of <see cref="ApiVersion">API versions</see>
         /// declared by the controller or action.</value>
-        /// <remarks>The declared API versions are constrainted to the versions declared explicitly by the specified controller or action.</remarks>
+        /// <remarks>The declared API versions are constrained to the versions declared explicitly by the specified controller or action.</remarks>
         public IReadOnlyList<ApiVersion> DeclaredApiVersions => declaredVersions.Value;
 
         /// <summary>

src/Microsoft.AspNet.WebApi.Versioning/System.Web.Http/HttpControllerDescriptorExtensions.cs

@@ -157,7 +157,7 @@ internal static IEnumerable<HttpControllerDescriptor> AsEnumerable( this HttpCon
         /// <param name="controllerDescriptor">The <see cref="HttpControllerDescriptor">controller</see> to evaluate.</param>
         /// <returns>A <see cref="IReadOnlyList{T}">read-only list</see> of <see cref="ApiVersion">API versions</see>
         /// declared by the controller.</returns>
-        /// <remarks>The declared API versions are constrainted to the versions declared explicitly by the specified controller.</remarks>
+        /// <remarks>The declared API versions are constrained to the versions declared explicitly by the specified controller.</remarks>
         public static IReadOnlyList<ApiVersion> GetDeclaredApiVersions( this HttpControllerDescriptor controllerDescriptor ) => controllerDescriptor.GetApiVersionModel().DeclaredApiVersions;
 
         /// <summary>