fix casing

Co-authored-by: ldecarvalho-doc <[email protected]>

Author: Mocramis

pages/instances/troubleshooting/index.mdx

@@ -74,5 +74,5 @@ productIcon: InstanceProductIcon
   - [Fix unreachable IPv6 RHEL-based Instances after transitioning to routed IP](/instances/troubleshooting/fix-unreachable-ipv6-rhel-based-instance)
   - [Fix unreachable Ubuntu Noble Instances following a reboot](/instances/troubleshooting/fix-unreachable-noble-after-reboot)
   - [Troubleshooting issues with faulty kernel installations](/instances/troubleshooting/reboot-from-faulty-kernel)
-  - [Missing memory and GPU metrics on the cockpit dashboard](/instances/troubleshooting/filling-memory-and-gpu-metrics-on-the-cockpit-dashboard)
+  - [Missing memory and GPU metrics on the Cockpit dashboard](/instances/troubleshooting/filling-memory-and-gpu-metrics-on-the-cockpit-dashboard)
 </LinksList>