[create-pull-request] automated change (#1319)

Co-authored-by: BillWagner <[email protected]>

Author: github-actions[bot]

standard/grammar.md

@@ -703,13 +703,9 @@ nullable_value_type
 
 // Source: §8.4.2 Type arguments
 type_argument_list
-    : '<' type_arguments '>'
+    : '<' type_argument (',' type_argument)* '>'
     ;
 
-type_arguments
-    : type_argument (',' type_argument)*
-    ;   
-
 type_argument
     : type
     | type_parameter nullable_type_annotation?
@@ -2635,7 +2631,6 @@ global_attributes
 
 global_attribute_section
     : '[' global_attribute_target_specifier attribute_list ']'
-    | '[' global_attribute_target_specifier attribute_list ',' ']'
     ;
 
 global_attribute_target_specifier
@@ -2652,7 +2647,6 @@ attributes
 
 attribute_section
     : '[' attribute_target_specifier? attribute_list ']'
-    | '[' attribute_target_specifier? attribute_list ',' ']'
     ;
 
 attribute_target_specifier
@@ -2665,7 +2659,7 @@ attribute_target
     ;
 
 attribute_list
-    : attribute (',' attribute)*
+    : attribute (',' attribute)* ','?
     ;
 
 attribute