added documentation links to sidebar

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

lng/de.lng.php

@@ -482,6 +482,10 @@ return [
 			'verify_ca' => 'Aktiviere SSL Zertifikats-Verifikation',
 		],
 		'settings_importfile' => 'Wähle Import-Datei',
+		'documentation' => 'Dokumentation',
+		'adminguide' => 'Admin Guide',
+		'userguide' => 'User Guide',
+		'apiguide' => 'API Guide',
 	],
 	'apikeys' => [
 		'no_api_keys' => 'Keine API Keys gefunden',

lng/en.lng.php

@@ -493,6 +493,10 @@ return [
 			'verify_ca' => 'Enable verification of the server SSL certificate',
 		],
 		'settings_importfile' => 'Chose import file',
+		'documentation' => 'Documentation',
+		'adminguide' => 'Admin guide',
+		'userguide' => 'User guide',
+		'apiguide' => 'API guide',
 	],
 	'apcuinfo' => [
 		'clearcache' => 'Clear APCu cache',