Improve MAUI Toolkit Cartesian Chart UG Content Using Syncfusion Continue AI

[Harsha-SF4223]

Description
Updated the Ug content for the Cartesian Chart.
Ensured the following points.

• Checked API link.
• Checked Images.
• Checked spelling's, Grammer and sentence format.

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: content

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: content
Image Alt Text Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
Image Size Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
Image Name Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
FT Layout Syntax Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
Front matter Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
File Path Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
CodeSnippet File Path Missing Error(s): 0
Toc Anchor Tags Validation Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)
MD Tag Validation Error(s): 0 (Critical: 0, High: 0, Medium: 0, Low: 0, Info: 0)