Merge branch 'new-oc-guide' into 'main'

Adding language support

See merge request 703/docs/du-docs-priv!6

object-storage.cs.md

+---
+languages:
+  - en
+  - cs
+---
+
+# Objektové úložiště
+
+Podrobné informace o službách objektových úložišť naleznete na [du.cesnet.cz](https://du.cesnet.cz/en/navody/object_storage/start)

object-storage.md

+---
+languages:
+  - en
+  - cs
+---
+
 # Object Storage
 
-All relevant documentation for Object Storage services could be found at [du.cesnet.cz](https://du.cesnet.cz/en/navody/object_storage/start)
+Detail documentation for Object Storage services could be found at [du.cesnet.cz](https://du.cesnet.cz/en/navody/object_storage/start)