content/: resolve lychee timeout urls

Signed-off-by: Artur Raglis <artur.raglis@3mdeb.com>

Author: artur-rs

content/elements.md

@@ -51,7 +51,7 @@ example.com (but not on Github, for example).
 
 Some text to show that the reference links can follow later.
 
-[arbitrary case-insensitive reference text]: https://www.themefisher.com
+[arbitrary case-insensitive reference text]: https://themefisher.com/
 [1]: https://gethugothemes.com
 [link text itself]: https://www.getjekyllthemes.com
 

content/events.md

@@ -1610,7 +1610,7 @@ all_events:
       date: "18-19.05.2021"
       event_poster: "images/events/2021/NGIForum21-rgb-300x93.jpg"
       additional_info: |
-        ### NGI Forum 2021 **[Official Page](https://www.ngi.eu/event/ngi-forum-2021/)**
+        ### NGI Forum 2021 **[Official Page](https://web.archive.org/web/20260113121937/https://www.ngi.eu/event/ngi-forum-2021/)**
 
       # segments:
       segments:

content/training.md

@@ -316,7 +316,7 @@ trainings:
       *   Hands-on exploitation and defensive management of UEFI Variables and Authenticated Variables.
       *   Implement and validate UEFI Secure Boot through practical exercises.
       *   Identify, analyze, and exploit vulnerabilities, including BootHole and BitPixie (CVE-2023-21563).
-      *   Dive into BootKitty, Hydrophobia, [[Feb 2025 GRUB2 CVEs](https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html)] and recent Gigabyte SMM vulnerabilities. (New)
+      *   Dive into BootKitty, Hydrophobia, [[Feb 2025 GRUB2 CVEs](https://web.archive.org/web/20251205111106/https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html)] and recent Gigabyte SMM vulnerabilities. (New)
       *   Implement and circumvent Intel Root of Trust, with a detailed case study on CVE-2017-5705 and a practical demonstration.
 
     audience: |