944821 - Updated WF pdfium UG to the new pdfium generated branch

[Dhileep4290]

Description :

• Updated the UG documentation of the WF PdfViewer for the newly generated Pdfium version

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: WPF-944821

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: WPF-944821
Technical Error(s): 0
Spelling Error(s): 0
Image Alt Text Error(s): 0
Image Size Error(s): 0
Image Name Error(s): 0
FT Layout Syntax Error(s): 0
Front matter Error(s): 0
File Path Error(s): 0
CodeSnippet File Path Missing Error(s): 0
Toc Anchor Tags Validation Error(s): 0
MD Tag Validation Error(s): 0