docs: correct link to data directory caching guide (#6265)

src/site/markdown/data/index.md

@@ -20,7 +20,7 @@ have a few options:
 
 1. Configure the [proxy settings](proxy.html) so that the build server can access the Internet
 2. [Mirror the NVD](./mirrornvd.html) locally within your organization
-3. Build the H2 database on one node and [cache the H2 database](./cachenvd.md).
+3. Build the H2 database on one node and [cache the H2 database](./cacheh2.md).
 4. Use a more robust [centralized database](./database.html) with a single update node
 
 ## CISA Known Exploited Vulnerabilities