fix link

Author: RexJaeschke

standard/classes.md

@@ -6850,7 +6850,7 @@ If the target type is a struct or class type that implements `System.Collections
 - The constructor that is applicable with no arguments is invoked.
 - For each *collection_element*, in order:
 
-  - If the *collection_element* is an *expression_element*, the applicable `Add` instance or extension method is invoked with the *element_expression* as the argument. (Unlike classic collection initializer behavior ([§12.8.16.4](expressions.md#128164-collection-initializers)), element evaluation and `Add` calls are not necessarily interleaved.)
+  - If the *collection_element* is an *expression_element*, the applicable `Add` instance or extension method is invoked with the *element_expression* as the argument. (Unlike classic collection initializer behavior ([§12.8.17.3.1](expressions.md#1281731-collection-initializers)), element evaluation and `Add` calls are not necessarily interleaved.)
   - If the *collection_element* is a *spread_element* then one of the following steps is used:
 
     - An applicable `GetEnumerator` instance or extension method is invoked on the *spread_element*’s *expression*, and for each item from the enumerator the applicable `Add` instance or extension method is invoked on the collection instance with the item as the argument. If the enumerator implements `IDisposable`, then `Dispose` shall be called after enumeration, regardless of any exceptions.