Update README.md implementation note

Author: Joy-less

README.md

@@ -549,7 +549,7 @@ Please raise an issue. Note that the format shouldn't stray too far from HJSON o
 You are welcome to write a JSONH parser or highlighter in a language of your choice. Raise an issue so it can be added to the list.
 
 > [!NOTE]
-> The official parser implementations (JsonhCs, JsonhCpp, JsonhTs, JsonhPy) are all implemented as similarly as possible. This means bugs can be easily fixed across implementations.
+> The official parser implementations are implemented as similarly as possible, which means bugs can be easily fixed across implementations. The reference implementation is [JsonhCs](https://github.com/jsonh-org/JsonhCs).
 
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