Remove the ZEND_ prefix from README for some node kinds

Author: TysonAndre

README.md

@@ -430,23 +430,23 @@ AST_YIELD:            value, key
 AST_YIELD_FROM:       expr
 
 // List nodes (numerically indexed children):
-ZEND_AST_ARG_LIST
-ZEND_AST_ARRAY
-ZEND_AST_CATCH_LIST
-ZEND_AST_CLASS_CONST_DECL
-ZEND_AST_CLOSURE_USES
-ZEND_AST_CONST_DECL
-ZEND_AST_ENCAPS_LIST           // interpolated string: "foo$bar"
-ZEND_AST_EXPR_LIST
-ZEND_AST_IF
-ZEND_AST_LIST
-ZEND_AST_NAME_LIST
-ZEND_AST_PARAM_LIST
-ZEND_AST_PROP_DECL
-ZEND_AST_STMT_LIST
-ZEND_AST_SWITCH_LIST
-ZEND_AST_TRAIT_ADAPTATIONS
-ZEND_AST_USE
+AST_ARG_LIST
+AST_ARRAY
+AST_CATCH_LIST
+AST_CLASS_CONST_DECL
+AST_CLOSURE_USES
+AST_CONST_DECL
+AST_ENCAPS_LIST           // interpolated string: "foo$bar"
+AST_EXPR_LIST
+AST_IF
+AST_LIST
+AST_NAME_LIST
+AST_PARAM_LIST
+AST_PROP_DECL
+AST_STMT_LIST
+AST_SWITCH_LIST
+AST_TRAIT_ADAPTATIONS
+AST_USE
 ```
 
 AST Versioning