Merge branch 'contact-to-support-part-3' into 'master'

Yet another `contact@hifis.net` converted to `support@hifis.net` + html extensions

See merge request hifis/hifis.net!72

cloud-platform.md

@@ -42,4 +42,4 @@ Later versions will contain more enhanced features like
 If you have suggestions about additional use cases and functionality, please feel free to contact us. We appreciate all input from the user community!
 
 ## Contact us:
-[contact@hifis.net](mailto:contact@hifis.net)
+[contact@hifis.net](mailto:{{ site.contact_mail }})

faq.md

@@ -16,7 +16,7 @@ Helmholtz research fields. See also our [**Mission Summary**](mission).
 
 #### [How can HIFIS help me as a researcher?][2]
 The purpose of HIFIS is to support science and scientists. Within the HIFIS platform, we are building:
-- The [**Helmholtz Cloud**](cloud-platform), providing a portfolio of seamlessly accessible IT services to simplify your daily work.
+- The [**Helmholtz Cloud**]({% link cloud-platform.md %}), providing a portfolio of seamlessly accessible IT services to simplify your daily work.
 - All cloud services and software trainings and support are free of charge!
 - A **Helmholtz-wide login mechanism**, the [Helmholtz AAI]({% post_url 2020/07/2020-07-24-helmholtz-aai %}),
 - A stable, high-bandwidth **network infrastructure** connecting all Helmholtz centers,