doc: fix indent in tls resumption example

Markdown requires 4-space indent to correctly format code blocks. This
fixes the example so it's correctly presented as code.

PR-URL: https://github.com/nodejs/node/pull/3372
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
This commit is contained in:
Roman Reiss 2015-10-14 21:45:12 +02:00
parent dae9fae0fe
commit 503f279527