tree-sitter.json: update class-name

Author: aspeddro

tree-sitter.json

@@ -7,7 +7,7 @@
       "scope": "source.rescript",
       "file-types": ["res", "resi"],
       "injection-regex": "^(res|rescript)$",
-      "class-name": "TreeSitterRescript",
+      "class-name": "TreeSitterReScript",
       "highlights": "queries/highlights.scm",
       "injections": "queries/injections.scm",
       "locals": "queries/locals.scm"