doc: fix lint re-enabling comment in README.md

If there is not a blank line before it, the comment does not re-enable
the rule.

PR-URL: #40647
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>

Author: Trott

Diff for: README.md

@@ -625,6 +625,7 @@ For information about the governance of the Node.js project, see
   **Yorkie Liu** <<[email protected]>>
 
 </details>
+
 <!--lint enable prohibited-strings-->
 
 Collaborators follow the [Collaborator Guide](./doc/guides/collaborator-guide.md) in