Update link check paths in workflow configuration

Author: StevenMaude

.github/workflows/check_links.yml

@@ -46,4 +46,4 @@ jobs:
         with:
           args: "--exclude-all-private --include-verbatim --max-concurrency 24 --require-https --verbose --no-progress --offline
           --accept '100..=103,200..=299,429,500..=511'
-          --timeout 60 './docs/**/*.md' './docs/**/*.html' './imported_docs/**/*.md' './imported_docs/**/*.html' --exclude-path './docs/ehrql/**/*.md' --exclude-path './docs/ehrql/**/*.html'"
+          --timeout 60 './docs/**/*.md' './docs/**/*.html' './imported_docs/**/*.md' './imported_docs/**/*.html' --exclude-path './docs/ehrql/'