minor text change

Author: aidankmcalister

.github/workflows/lychee.yml

@@ -54,9 +54,7 @@ jobs:
             cat > lychee/formatted.md << 'EOF'
           ## 🍈 Lychee Link Check Report
 
-          > **Automated link validation** — All links in documentation have been checked for availability.
-
-          > **Note:** Links are cached for 6 hours to avoid unnecessary requests.
+          > **Note:** Links are cached for 3 hours to avoid unnecessary requests, and speed up consecutive runs.
 
           ### 📊 Results Overview