fix integration of code for docs webpage

before, the two hyphens were replaced by a dash in the view presented on docs.nextcloud.com, resulting in an erroneous occ command (too many arguments to "config:app:set")

Signed-off-by: piechocki <[email protected]>

Author: piechocki

admin_manual/configuration_files/encryption_configuration.rst

@@ -136,7 +136,7 @@ Encrypting team folders
 -----------------------
 
 By default team folder are not encrypted. If you want to encrypt your team folders
-as well you need to run following occ command:
+as well you need to run following occ command::
 
  occ config:app:set groupfolders enable_encryption --value=true