Merge branch 'update-overview-pdf' into 'master'

update overview pdf

See merge request hifis/overall/hifis.net!488

media/index.md

@@ -20,6 +20,6 @@ excerpt:
     - [Poster]({{ site.directory.images | relative_url }}/hifisfor/HIFIS_poster_claim_contact.svg)
     - [Video]({{ site.directory.videos | relative_url }}/video_full.mp4)
 - Overview HIFIS: Digital Services for Helmholtz & Partners
-    - [English Version]({{ 'media/HIFIS_overview_en.pdf' | relative_url }})
-    -  [German Version]({{ 'media/HIFIS_overview_de.pdf' | relative_url }})
+    - [English Version]({{ 'media/HIFIS_overview_2022_03_en.pdf' | relative_url }})
+    -  [German Version]({{ 'media/HIFIS_overview_2022_03_de.pdf' | relative_url }})