983838: Updated the UG content and example changes in the chart control.

[mohammednowfel4989]

Updated the contents and samples in the UG for the following pages in chart control:

• Range Area
• Range Step Area
• Stacked Area
• 100% Stacked Area
• Step Area

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: Blaz-SF4989-ChartTypes1

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: Blaz-SF4989-ChartTypes1
Technical Error(s): 0
Spelling Error(s): 0
Image Alt Text Error(s): 0
Image Size Error(s): 0
Image Name 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

[SyncfusionBuild]

Build Status: INQUEUE 🕒
Build Location: Blaz-SF4989-ChartTypes1

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: Blaz-SF4989-ChartTypes1

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: Blaz-SF4989-ChartTypes1
Technical Error(s): 0
Spelling Error(s): 0
Image Alt Text Error(s): 0
Image Size Error(s): 0
Image Name 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

[Karthigaiselvi-SF2856]

changes reviewed. No major concerns.

[Gowrimathi]

Fine