style: preserve blogpost banner emphasis

Author: dbrattli

docs/blogpost.md

@@ -1,6 +1,6 @@
 # Introduction to Fable.Python
 
-Generated on 2026-08-13 21:26 UTC using Fable v5.13.0
+*Generated on 2026-08-13 21:29 UTC using Fable v5.13.0*.
 
 > This post is part of the [F# Advent Calendar
 2025](https://sergeytihon.com/2025/11/03/f-advent-calendar-in-english-2025/). Thank you, Sergey Tihon, for organizing

justfile

@@ -80,7 +80,7 @@ blogpost: build format-python
                 "chapters/${name}.fs" > docs/blogpost.md
             # Insert version banner after the first heading using awk
             awk -v ts="$timestamp" -v fv="$fable_version" \
-                'NR==1 {print; print ""; print "Generated on " ts " using Fable v" fv; next} {print}' \
+                'NR==1 {print; print ""; print "*Generated on " ts " using Fable v" fv "*."; next} {print}' \
                 docs/blogpost.md > docs/blogpost.tmp && mv docs/blogpost.tmp docs/blogpost.md
             first=false
         else