Fix broken hyperlink to Pingplotter (#302)

* Fix broken hyperlink to Pingplotter

* Remove file extension

docs/networking/mtr.md

@@ -10,12 +10,12 @@ last_modified_date: 2024-02-15
 This article relies on the live media [created here](/docs/live-sessions/linux-live-session).
 
 ## Overview
-The mtr tool combines the functionality of the traceroute and ping programs in a single network diagnostic tool, it is [Pingplotter](/docs/networking/pingplotter.md) for Linux.
+The mtr tool combines the functionality of the traceroute and ping programs in a single network diagnostic tool, it is [Pingplotter](/docs/networking/pingplotter) for Linux.
 
 ## Using MTR to troubleshoot
 1. Open "terminal emulator" from the application menu
 2. Run `mtr <ip or hostname>` where \<ip or hostname\> is a site or game server you are having issues with.
     - To do a basic test you can use "google.com": `mtr google.com`
 3. Let mtr run for about 2 minutes then take a screenshot and share it with the channel.
     - To take a screenshot in our live session type "screenshot" in the application menu to open the screenshot utility.
-    - After taking your screenshot use the "Host on imgur" option to upload the screenshot and get a URL that you will provide to the chat.
+    - After taking your screenshot use the "Host on imgur" option to upload the screenshot and get a URL that you will provide to the chat.