Updates link checker concurrency.

.github/workflows/links_checker.yml

@@ -12,7 +12,7 @@ jobs:
   link_checker:
     name: Check links and create automated issue if needed
     runs-on: ubuntu-latest
-    timeout-minutes: 10
+    timeout-minutes: 5
     env:
       REPORT_FILE: links-report
     steps:
@@ -34,7 +34,7 @@ jobs:
             --accept 200,204,206
             --headers "accept=text/html"
             --timeout 20
-            --max-concurrency 5
+            --max-concurrency 10
             --no-progress
             README.md translations/*.md
         env: