fix: Update Vault references to use new documentation links (#1024)

Updates two hashicorp links to the current locations

Author: JTorreG

content/nim/system-configuration/configure-vault.md

@@ -15,8 +15,8 @@ HashiCorp's Vault is a popular solution for storing secrets. While F5 NGINX Inst
 
 To complete the steps in this guide, you need:
 
-- A working understanding of [Vault](https://www.vaultproject.io) and its operations.
-- A running version of [Vault 1.8.8 or later](https://www.vaultproject.io/docs/install).
+- A working understanding of [Vault](https://developer.hashicorp.com/vault) and its operations.
+- A running version of [Vault 1.8.8 or later](https://developer.hashicorp.com/vault/install).
 
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