Fix wrong text in log

Code/updateFileEncoding.rb

@@ -80,7 +80,7 @@ class Main
       print "\n--- Trabalhando ".light_cyan.bold +
             "no arquivo #{f.split('/').last} ".light_cyan.bold +
             "(#{@tools.get_file_size(f)})".light_magenta.bold +
-            " (Arquivo #{i+1} de @files.length) ---\n\n".bold
+            " (Arquivo #{i+1} de #{@files.length}) ---\n\n".bold
       cleanup_files = [f]
       if @change_encoding
         @tools.convert_encoding(f, "#{f.split('.')[0]}-encoded.csv",