fix: remove .html from link roadmap

data/roadmap.yml

@@ -115,54 +115,54 @@
   description: 
   icon: fa-fire
   date: March 2024
-  reference: /2024/03/16/testnet-phoenix-launched.html
+  reference: /2024/03/16/testnet-phoenix-launched
   state: completed
 
 - title: Main Net Launched 🚀
   description: 
   icon: fa-rocket
   date: 24 January 2024
-  reference: /2024/01/24/mainnet-launched.html
+  reference: /2024/01/24/mainnet-launched
   state: completed
 
 - title: Testnet-2 Concluded
   description: 
   icon: fa-check
   date: January 2024
-  reference: /2024/01/22/testnet-2-concluded.html
+  reference: /2024/01/22/testnet-2-concluded
   state: completed
 
 - title: Testnet-2 Launched 🧪
   description: 
   icon: fa-flask
   date: October 2023
-  reference: /2023/10/15/testnet-2-launched.html
+  reference: /2023/10/15/testnet-2-launched
   state: completed
 
 - title: Testnet-1 Concluded
   description: 
   icon: fa-check
   date: August 2023
-  reference: /2023/08/01/testnet-1-concluded.html
+  reference: /2023/08/01/testnet-1-concluded
   state: completed
 
 - title: Testnet-1 Launched 🧪
   description: 
   icon: fa-flask
   date: May 2023
-  reference: /2023/05/09/testnet-1-launched.html
+  reference: /2023/05/09/testnet-1-launched
   state: completed
 
 - title: Testnet-0 Concluded
   description: 
   icon: fa-check
   date: April 2023
-  reference: /2023/04/21/testnet-0-concluded.html
+  reference: /2023/04/21/testnet-0-concluded
   state: completed
 
 - title: Testnet-0 Launched 🧪
   description: 
   icon: fa-flask
   date: September 2022
-  reference: /2022/09/24/testnet-0-launched.html
+  reference: /2022/09/24/testnet-0-launched
   state: completed