Update title (brianc#2886)

This will change the title of the docs from Next.js Static Site Generator to node-postgres

Author: meronogbai

docs/theme.config.js

@@ -24,7 +24,7 @@ export default {
  logo: (
  <>
  <svg>...</svg>
- <span>Next.js Static Site Generator</span>
+ <span>node-postgres</span>
  </>
  ),
  head: (