Save check-links output to check-links.log via tee

Saving to disk before hitting the reporter appears to remove the flaky non-zero exit codes too

Co-authored-by: Romaric Pascal <[email protected]>

Author: colinrotherham

.gitignore

@@ -1,6 +1,6 @@
 deploy/public
 node_modules/
-npm-debug.log
+*.log
 .DS_Store
 .sass-cache
 .cache

package.json

@@ -26,7 +26,7 @@
     "lint:js": "eslint --cache --cache-location .cache/eslint --cache-strategy content --color --ignore-path .gitignore \"**/*.{cjs,js,md,mjs}\"",
     "lint:prettier": "prettier --cache --cache-location .cache/prettier --cache-strategy content --check \"**/*.{cjs,js,json,md,mjs,scss,yaml,yml}\"",
     "lint:scss": "stylelint \"**/*.{md,scss}\"",
-    "check-links": "hyperlink --canonicalroot https://design-system.service.gov.uk/ --internal --recursive deploy/public/sitemap.xml | tap-min"
+    "check-links": "hyperlink --canonicalroot https://design-system.service.gov.uk/ --internal --recursive deploy/public/sitemap.xml | tee check-links.log | tap-min"
   },
   "dependencies": {
     "accessible-autocomplete": "^2.0.4",