add links in descriptions

Author: djyotta

examples/official-site/sqlpage/migrations/01_documentation.sql

@@ -739,6 +739,10 @@ and `shell.json` would be placed at the website''s root and contain the followin
 INSERT INTO component(name, icon, description) VALUES
     ('shell', 'layout-navbar', 'Personalize the "shell" surrounding your page contents. Used to set properties for the entire page.');
 
+INSERT INTO parameter(component, name, description_md, type, top_level, optional) SELECT 'shell', * FROM (VALUES
+    ('favicon', 'The URL of the icon the web browser should display in bookmarks and tabs. This property is particularly useful if multiple sites are hosted on the same domain with different [``site_prefix``](https://github.com/lovasoa/SQLpage/blob/main/configuration.md#configuring-sqlpage).', 'URL', TRUE, TRUE),
+    ('manifest', 'The location of the [manifest.json](https://developer.mozilla.org/en-US/docs/Web/Manifest) if the site is a [PWA](https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps). Among other features, serving a manifest enables your site to be "installed" as an app on most mobile devices.', 'URL', TRUE, TRUE)
+) x;
 INSERT INTO parameter(component, name, description, type, top_level, optional) SELECT 'shell', * FROM (VALUES
     -- top level
     ('title', 'The title of your page. Will be shown in a top bar above the page contents. Also usually displayed by web browsers as the name of the web page''s tab.', 'TEXT', TRUE, TRUE),
@@ -750,8 +754,6 @@ INSERT INTO parameter(component, name, description, type, top_level, optional) S
     ('rss', 'The URL of an RSS feed to display in the top navigation bar. You can use the rss component to generate the field.', 'URL', TRUE, TRUE),
     ('image', 'The URL of an image to display next to the page title.', 'URL', TRUE, TRUE),
     ('icon', 'Name of an icon (from tabler-icons.io) to display next to the title in the navigation bar.', 'ICON', TRUE, TRUE),
-    ('favicon', 'The URL of the icon the web browser should display in bookmarks and tabs. This property is particularly useful if multiple sites are hosted on the same domain.', 'URL', TRUE, TRUE),
-    ('manifest', 'The location of the manifest.json if the site is a PWA. Serving a manifest enables your site to be "installed" as an app on most mobile devices.', 'URL', TRUE, TRUE),
     ('menu_item', 'Adds a menu item in the navigation bar at the top of the page. The menu item will have the specified name, and will link to as .sql file of the same name. A dropdown can be generated by passing a json object with a `title` and `submenu` properties.', 'TEXT', TRUE, TRUE),
     ('search_target', 'When this is set, a search field will appear in the top navigation bar, and load the specified sql file with an URL parameter named "search" when the user searches something.', 'TEXT', TRUE, TRUE),
     ('norobot', 'Forbids robots to save this page in their database and follow the links on this page. This will prevent this page to appear in Google search results for any query, for instance.', 'BOOLEAN', TRUE, TRUE),