Add introduction section to PDF generation README

Added an introduction section to the README for clarity.

Author: HackoDev1530

Client-Side Components/UI Actions/Generate a PDF/README.md

@@ -1,7 +1,8 @@
+# Introduction
 Generating a PDF using PDFGenerationAPI
 Calling an OOTB convertToPDFWithHeaderFooter() method to generate a PDF with your header and footer.
 PDFGenerationAPI – convertToPDFWithHeaderFooter(String html, String targetTable, String targetTableSysId, String pdfName, Object headerFooterInfo, String fontFamilySysId, Object documentConfiguration)
 
-Example:
+# Example:
 <img width="704" height="496" alt="image" src="https://github.com/user-attachments/assets/9d086ee3-db76-482d-ab11-4b0540a5e2fb" />