chore: Disable YARD documentation removal after generation

- Comment out the `t.after` hook in Rakefile that removes generated documentation
- Preserve the generated documentation for future reference and potential use

This change ensures that the dynamically generated YARD documentation remains available after the documentation generation process.

Author: Youngv

Rakefile

@@ -20,5 +20,5 @@ YARD::Rake::YardocTask.new do |t|
   t.files = ["lib/**/*.rb"]
   t.options = ["--exclude", "lib/ta_lib_ffi/doc.rb"]
   t.stats_options = ["--list-undoc"]
-  t.after = -> { TALibFFI::Doc.remove }
+  # t.after = -> { TALibFFI::Doc.remove }
 end