Fix Letter Case

Author: vnikolin

articles/operator-nexus/troubleshoot-hardware-validation-failure.md

@@ -45,7 +45,7 @@ Expanding `result_detail` for a given category shows detailed results.
 
 ### System info category
 
-* Memory/RAM related failure (memory_capacity_GB)
+* Memory/RAM Related Failure (memory_capacity_GB)
     * Memory specs are defined in the SKU. Memory below threshold value indicates missing or failed DIMM(s). Failed DIMM(s) would also be reflected in the `health_info` category. The following example shows a failed memory check.
 
     ```json