fix: fix rel notes link to point to main branch

previously went to master

templates/cli_reference_xml.hbs

@@ -33,7 +33,7 @@ IF YOU WANT TO CHANGE THIS CONTENT, CONTACT [email protected] FOR D
                 href="https://developer.salesforce.com/docs/atlas.en-us.sfdx_setup.meta/sfdx_setup/sfdx_setup_install_cli.htm" 
                 type="new-window:HTML" format="html" scope="external">Salesforce CLI Setup Guide</xref></cite>.</p>
             <p>For information about Salesforce CLI changes, see the <cite><xref 
-                href="https://github.com/forcedotcom/cli/blob/master/releasenotes/README.md"
+                href="https://github.com/forcedotcom/cli/blob/main/releasenotes/README.md"
                 type="new-window:HTML" format="html" scope="external">Salesforce CLI Release Notes</xref></cite>.</p>
         </section>
     </refbody>