fix(public directory): not deleting old files

fixed by deleting all html files in the public directory

luago.lua

@@ -122,8 +122,12 @@ end
 -- get index.html content
 local indexFile = io.open("index.html"):read("*all")
 
--- remove and create "public/" directory
+-- delete html files and create "public/" directory
-lfs.rmdir("public")
+for file in lfs.dir(currentDir .. "/public") do
+    if file:match("%.html$") then
+        os.remove(currentDir .. "/public/" .. file)
+    end
+end
 lfs.mkdir("public")
 
 for index, _ in ipairs(markdownFiles) do