fix link

Author: RexJaeschke

standard/classes.md

@@ -23,7 +23,7 @@ class_tag
     ;
 ```
 
-A *class_declaration* consists of an optional set of *attributes* ([§22](attributes.md#22-attributes)), followed by an optional set of *class_modifier*s ([§15.2.2](classes.md#1522-class-modifiers)), followed by an optional `partial` modifier ([§15.2.7](classes.md#1527-partial-declarations)), followed by a *class_tag* and an *identifier* that names the class, followed by an optional *type_parameter_list* ([§15.2.3](classes.md#1523-type-parameters)), followed by an optional *parameter_list* ([§15.6.2.1]( classes.md#15621-general)), followed by an optional *class_base* specification ([§15.2.4](classes.md#1524-class-base-specification)), followed by an optional set of *type_parameter_constraints_clause*s ([§15.2.5](classes.md#1525-type-parameter-constraints)), followed by a *class_body* ([§15.2.6](classes.md#1526-class-body)).
+A *class_declaration* consists of an optional set of *attributes* ([§22](attributes.md#22-attributes)), followed by an optional set of *class_modifier*s ([§15.2.2](classes.md#1522-class-modifiers)), followed by an optional `partial` modifier ([§15.2.7](classes.md#1527-partial-type-declarations)), followed by a *class_tag* and an *identifier* that names the class, followed by an optional *type_parameter_list* ([§15.2.3](classes.md#1523-type-parameters)), followed by an optional *parameter_list* ([§15.6.2.1]( classes.md#15621-general)), followed by an optional *class_base* specification ([§15.2.4](classes.md#1524-class-base-specification)), followed by an optional set of *type_parameter_constraints_clause*s ([§15.2.5](classes.md#1525-type-parameter-constraints)), followed by a *class_body* ([§15.2.6](classes.md#1526-class-body)).
 
 A class declaration shall not supply *type_parameter_constraints_clause*s unless it also supplies a *type_parameter_list*.