Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: st0012

lib/rdoc/parser/ruby.rb

@@ -828,7 +828,8 @@ def add_module_or_class(module_name, start_line, end_line, is_class: false, supe
 
   # Extracts RBS type signature lines (#: ...) from raw comment text.
   # Mutates the input text to remove the extracted lines.
-  # Returns the type signature string, or nil if none found.
+  # Returns an array of extracted type signature lines, or nil if none are
+  # found. The array may contain multiple lines for overloaded signatures.
 
   def extract_type_signature!(text, start_line)
     return nil unless text.include?('#:')