fix renumbering warnings.

Author: BillWagner

docs/csharp/asynchronous-programming/async-return-types.md

@@ -71,7 +71,7 @@ The following example shows the behavior of an async event handler. In the examp
 
 ## Generalized async return types and ValueTask\<TResult\>
 
-An async method can return any type that has an accessible `GetAwaiter` method that returns an instance of an *awaiter type*. In addition, the type returned from the `GetAwaiter` method must have the <xref:System.Runtime.CompilerServices.AsyncMethodBuilderAttribute?displayProperty=nameWithType> attribute. You can learn more in the article on [Attributes read by the compiler](../language-reference/attributes/general.md#asyncmethodbuilder-attribute) or the C# spec for the [Task type builder pattern](~/_csharpstandard/standard/classes.md#15152-task-type-builder-pattern).
+An async method can return any type that has an accessible `GetAwaiter` method that returns an instance of an *awaiter type*. In addition, the type returned from the `GetAwaiter` method must have the <xref:System.Runtime.CompilerServices.AsyncMethodBuilderAttribute?displayProperty=nameWithType> attribute. You can learn more in the article on [Attributes read by the compiler](../language-reference/attributes/general.md#asyncmethodbuilder-attribute) or the C# spec for the [Task type builder pattern](~/_csharpstandard/standard/classes.md#15142-task-type-builder-pattern).
 
 This feature is the complement to [awaitable expressions](~/_csharpstandard/standard/expressions.md#12982-awaitable-expressions), which describes the requirements for the operand of `await`. Generalized async return types enable the compiler to generate `async` methods that return different types. Generalized async return types enabled performance improvements in the .NET libraries. Because <xref:System.Threading.Tasks.Task> and <xref:System.Threading.Tasks.Task%601> are reference types, memory allocation in performance-critical paths, particularly when allocations occur in tight loops, can adversely affect performance. Support for generalized return types means that you can return a lightweight value type instead of a reference type to avoid more memory allocations.
 

docs/csharp/programming-guide/concepts/iterators.md

@@ -337,7 +337,7 @@ On each successive iteration of the `foreach` loop (or the direct call to `IEnum
 
 Iterators don't support the <xref:System.Collections.IEnumerator.Reset%2A?displayProperty=nameWithType> method. To reiterate from the start, you must obtain a new iterator. Calling <xref:System.Collections.IEnumerator.Reset%2A> on the iterator returned by an iterator method throws a <xref:System.NotSupportedException>.
 
-For additional information, see the [C# Language Specification](~/_csharpstandard/standard/classes.md#1514-iterators).
+For additional information, see the [C# Language Specification](~/_csharpstandard/standard/classes.md#1515-iterators).
 
 ## Use of Iterators