Use custom URL for main url attribute instead for JSON and RSS feeds

[jarylc]

When accessing the JSON and RSS feeds, I've noticed that the main url attribute for posts links to my pages.dev domain rather than my custom domain. Likely because I created the posts from there.

This PR changes it to be the same as _microfeed['web_url'] which will use the custom domain as base regardless.

[jarylc]

I actually did just notice you can update the link in the Edit Item page.

Is that intentional? I do feel that the link shouldn't be saved unless it is for the canonical link, but I believe it is not.

Maybe it would make more sense for it to be path instead of link, but I can see it being useful in the rare case where the site has a proxy/mirror.

[wenbinf]

I actually did just notice you can update the link in the Edit Item page.

Is that intentional? I do feel that the link shouldn't be saved unless it is for the canonical link, but I believe it is not.

Maybe it would make more sense for it to be path instead of link, but I can see it being useful in the rare case where the site has a proxy/mirror.

Yes, an item's link can be updated. In some cases, an item includes nothing but an external link, e.g., https://www.wenbin.org/ , so it may be better to make the external link rather than the item's microfeed link.