[#4737] improvement(ui): update documentation link (#4771)

### What changes were proposed in this pull request?
link the apache website instead of a company websit

### Why are the changes needed?
The latest docs will release at apache website

Fix: #4737

### Does this PR introduce _any_ user-facing change?
N/A

### How was this patch tested?
N/A

integration-test/src/test/java/org/apache/gravitino/integration/test/web/ui/MetalakePageTest.java

@@ -34,7 +34,7 @@ public class MetalakePageTest extends AbstractWebIT {
   private static final String METALAKE_NAME = "metalake_name";
   private static final String EDITED_METALAKE_NAME = METALAKE_NAME + "_edited";
   private static final String FOOTER_LINK_DATASTRATO = "https://gravitino.apache.org/";
-  private static final String FOOTER_LINK_DOCS = "https://datastrato.ai/docs/";
+  private static final String FOOTER_LINK_DOCS = "https://gravitino.apache.org/docs/latest/";
   private static final String FOOTER_LINK_LICENSE =
       "https://github.com/apache/gravitino/blob/main/LICENSE";
   private static final String FOOTER_LINK_SUPPORT = "https://github.com/apache/gravitino/issues";

web/src/app/rootLayout/Footer.js

@@ -49,7 +49,7 @@ const Footer = props => {
             <Link
               className={'twc-no-underline twc-text-primary-main'}
               target='_blank'
-              href='https://datastrato.ai/docs/'
+              href='https://gravitino.apache.org/docs/latest/'
               data-refer='footer-link-docs'
             >
               Documentation