FIx more warnings

admin_manual/configuration_files/external_storage_configuration_gui.rst

@@ -113,9 +113,8 @@ may provide their own backends, which are not listed here.
     external_storage/ftp
     external_storage/google
     external_storage/local
-	external_storage/nextcloud
+    external_storage/nextcloud
     external_storage/openstack
-    external_storage/owncloud
     external_storage/sftp
     external_storage/smb
     external_storage/webdav

admin_manual/installation/nginx_examples.rst

@@ -26,7 +26,6 @@ community-maintained. (Thank you, contributors!)
 Example Configurations
 ----------------------
 
-- :doc:`nginx_owncloud_8x`
 - :doc:`nginx_nextcloud_9x`
 
 You can use Nextcloud over plain http, but we strongly encourage you to use 
@@ -92,7 +91,7 @@ To use http_v2 for nginx you have to check two things:
    ``listen 443 ssl spdy;`` to ``listen 443 ssl http2;``
 
 nginx: caching Nextcloud gallery thumbnails
-==========================================
+===========================================
 
 One of the optimizations for Nextcloud when using nginx as the Web server is to 
 combine FastCGI caching with "Cache Purge", a `3rdparty nginx module 

admin_manual/maintenance/upgrade.rst

@@ -77,19 +77,6 @@ designation. **Install unsupported apps at your own risk**. Then, before the
 upgrade, all 3rd party apps must be disabled. After the upgrade is complete you 
 may re-enable them.
 
-.. _Open Build Service: 
-   https://download.owncloud.org/download/repositories/8.2/owncloud/
-   
-.. _owncloud.org/install/:
-   https://owncloud.org/install/  
-
-Encryption migration from oC 7.0 to 8.0 and 8.0 to 8.1
-------------------------------------------------------
-
-The encryption backend was changed twice between ownCloud 7.0 and 8.0 as well as
-between 8.0 and 8.1. If you're upgrading from these older versions please refer to 
-:ref:`upgrading_encryption_label` for the needed migration steps.
-
 Debian Migration to Official ownCloud Packages
 ----------------------------------------------