1. correct code type in addons.markdown
2. add missed code type in crypto.markdown
PR-URL: https://github.com/nodejs/node/pull/4858
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Roman Klauke <romaaan.git@gmail.com>
To test it, run the following JavaScript:
-```cpp
+```js
// test.js
const addon = require('./build/Release/addon');
Example: Using `Decipher` and piped streams:
-```
+```js
const crypto = require('crypto');
const fs = require('fs');
const decipher = crypto.createDecipher('aes192', 'a password');