[DATALAD RUNCMD] run codespell throughout fixing few left typos automagically

=== Do not change lines below ===
{
 "chain": [],
 "cmd": "codespell -w",
 "exit": 0,
 "extra_inputs": [],
 "inputs": [],
 "outputs": [],
 "pwd": "."
}
^^^ Do not change lines above ^^^

src/routes/+layout.js

@@ -10,7 +10,7 @@
 export const ssr = false;
 
 // How to manage the trailing slashes in the URLs
-// the URL for about page witll be /about with 'ignore' (default)
-// the URL for about page witll be /about/ with 'always'
+// the URL for about page will be /about with 'ignore' (default)
+// the URL for about page will be /about/ with 'always'
 // https://kit.svelte.dev/docs/page-options#trailingslash
 export const trailingSlash = 'ignore';