docs(jsonc): add module-level docs (#4402)

* docs(jsonc): add module-level docs

* Yoshiya's suggestion

jsonc/mod.ts

@@ -1,4 +1,24 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 // This module is browser compatible.
 
+/**
+ * Provides tools for working with JSONC (JSON with comments). Currently, this
+ * module only provides a means of parsing JSONC. JSONC serialization is not
+ * yet supported.
+ *
+ * This module is browser compatible.
+ *
+ * @example
+ * ```ts Parsing JSONC
+ * import { parse } from "https://deno.land/std@$STD_VERSION/jsonc/mod.ts";
+ *
+ * parse('{"foo": "bar", } // comment'); // { foo: "bar" }
+ * parse('{"foo": "bar", } /* comment *\/'); // { foo: "bar" }
+ * parse('{"foo": "bar" } // comment', {
+ *   allowTrailingComma: false,
+ * }); // { foo: "bar" }
+ * ```
+ *
+ * @module
+ */
 export * from "./parse.ts";

jsonc/parse.ts

@@ -33,11 +33,11 @@ export interface ParseOptions {
  * ```ts
  * import { parse } from "https://deno.land/std@$STD_VERSION/jsonc/mod.ts";
  *
- * console.log(parse('{"foo": "bar", } // comment')); // { foo: "bar" }
- * console.log(parse('{"foo": "bar", } /* comment *\/')); // { foo: "bar" }
- * console.log(parse('{"foo": "bar" } // comment', {
+ * parse('{"foo": "bar", } // comment'); // { foo: "bar" }
+ * parse('{"foo": "bar", } /* comment *\/'); // { foo: "bar" }
+ * parse('{"foo": "bar" } // comment', {
  *   allowTrailingComma: false,
- * })); // { foo: "bar" }
+ * }); // { foo: "bar" }
  * ```
  *
  * @param text A valid JSONC string.