Add link from svelte-transition to svelte/transition page (fixes #15296)#16016

RohithPariki wants to merge 2 commits intosveltejs:mainsveltejs/svelte:mainfrom

RohithPariki:issue-15296-link-svelte-transition-docsRohithPariki/svelte:issue-15296-link-svelte-transition-docsCopy head branch name to clipboard