Fix text in C++ default statement #928

Job	Run time
build	47s
typescript,typescript-zod,typescript-effect-schema	3m 6s
javascript,schema-javascript	1m 19s
golang,schema-golang	1m 32s
cjson,schema-cjson	1m 42s
cplusplus,schema-cplusplus	3m 4s
flow,schema-flow	1m 56s
java,schema-java	5m 41s
python,schema-python	2m 8s
haskell,schema-haskell	7m 50s
csharp,schema-csharp,schema-json-csharp,graphql-csharp,csharp-SystemTextJson	6m 1s
json-ts-csharp	2m 15s
dart,schema-dart	1m 33s
swift,schema-swift	2m 37s
javascript-prop-types	1m 20s
ruby	1m 9s
php	1m 13s
scala3,schema-scala3	2m 28s
elixir,schema-elixir,graphql-elixir	6m 43s
rust,schema-rust	4m 2s
kotlin,schema-kotlin,kotlin-jackson,schema-kotlin-jackson	6m 50s
objective-c	1s
test-complete	1s
	1h 5m 18s

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