fix(transformer.py): fpdf2 doesn't accept more than 1 positional arg (#2019)

Co-authored-by: arik <alon.arik@gmail.com>

Author: wardVD

src/robusta/core/sinks/transformer.py

@@ -296,4 +296,4 @@ def write_table(pdf: FPDF, rows: List[list[str]]):
             write_section_header(pdf, section_name)
             write_table(pdf, rows)
 
-        return FileBlock(f"{title}.pdf", pdf.output("", "S"))
+        return FileBlock(f"{title}.pdf", pdf.output())