Link fixes for Jellyfin source (syslog-ng#29)

Link fixes for Jellyfin source

Signed-off-by: Zsolt Gyulai (zgyulai) <zsolt.gyulai@quest.com>

_data/external_links.yml

@@ -172,3 +172,23 @@ grpc-core:
   id: grpc-core
   url: https://grpc.github.io/grpc/core/group__grpc__arg__keys.html
   title: [ "GRPC Core library documentation" ]
+
+gh-jellyfin:
+  id: gh-jellyfin
+  url: https://github.com/syslog-ng/syslog-ng/blob/master/scl/jellyfin/jellyfin.conf
+  title: [ "Jellyfish config file on GitHub" ]
+
+jellyfin-logs:
+  id: jellyfin-logs
+  url: https://jellyfin.org/
+  title: [ "Jellyfin logs" ]
+
+jellyfin-main:
+  id: jellyfin-main
+  url: https://jellyfin.org/docs/general/administration/configuration/#main-configuration
+  title: [ "Jellyfin Main Configuration" ]
+
+jellyfin-log-dir:
+  id: jellyfin-log-dir
+  url: https://jellyfin.org/docs/general/administration/configuration/#log-directory
+  title: [ "Jellyfin Log Directory" ]

doc/_admin-guide/060_Sources/035_Jellyfin/README.md

@@ -3,7 +3,7 @@ title: Jellyfin log source
 short_title: Jellyfin
 id: adm-src-jfin
 description: >-
-    In syslog-ng OSE 4.7 and later versions it is possible to use the `jellyfin()` source to read [Jellyfin](https://jellyfin.org/) logs from its log file output.
+    In syslog-ng OSE 4.7 and later versions it is possible to use the `jellyfin()` source to read Jellyfin logs from its log file output.
 ---
 
 ### Example: minimal configuration of jellyfin()
@@ -19,8 +19,6 @@ source s_jellyfin {
 
 The `jellyfin()` source can use wildcard-file() source options, since it is based on the `wildcard-file()` source.
 
-The `jellyfin()` driver is a reusable configuration snippet. For more information on using configuration snippets, see Reusing configuration blocks. The source of this configuration snippet can be accessed as the Jellyfish config file on GitHub. [GitHub](https://github.com/syslog-ng/syslog-ng/blob/master/scl/jellyfin/jellyfin.conf).
+The `jellyfin()` driver is a reusable configuration snippet. For more information on using configuration snippets, see Reusing configuration blocks. The source of this configuration snippet can be accessed as the Jellyfish config file on GitHub.
 
 For more information about Jellyfin logs, see the Jellyfin Main Configuration and Jellyfin Log Directory section in the Jellyfin documentation.
-* [https://jellyfin.org/docs/general/administration/configuration/#main-configuration](https://jellyfin.org/docs/general/administration/configuration/#main-configuration)
-* [https://jellyfin.org/docs/general/administration/configuration/#log-directory](https://jellyfin.org/docs/general/administration/configuration/#log-directory)