doc: return comment to original format

Signed-off-by: Lucas Santos <lhs.santoss@gmail.com>

Author: khaosdoctor

doc/api/webstreams.md

@@ -1516,8 +1516,9 @@ blob(readable).then((data) => {
 
 #### `streamConsumers.buffer(stream)`
 
-\<!-added: v16.7.0
-\-->
+<!-- YAML
+added: v16.7.0
+-->
 
 * `stream` {ReadableStream|stream.Readable|AsyncIterator}
 * Returns: {Promise} Fulfills with a {Buffer} containing the full