Update supported-fonts.mdx

add link to custom font section in first section

Author: kathayl

src/content/docs/browser-rendering/reference/supported-fonts.mdx

@@ -8,7 +8,7 @@ import { Tabs, TabItem } from "~/components";
 
 Browser Rendering uses a managed Chromium environment that includes a standard set of fonts. When you generate a screenshot or PDF, text is rendered using the fonts available in this environment.
 
-If your webpage specifies a font that is not supported yet, Chromium will automatically fall back to a similar supported font. If you would like to use a font that is not currently supported, you can [add a custom font](/browser-rendering/reference/supported-fonts/#using-custom-fonts).
+If your webpage specifies a font that is not supported yet, Chromium will automatically fall back to a similar supported font. If you would like to use a font that is not currently supported, you can [add a custom font](/browser-rendering/reference/supported-fonts/#use-your-own-custom-font).
 
 ## Generic CSS font family support