Merge pull request #4402 from syncfusion-content/955200-ChangeCaseCore

955200: Added documentation for change case

Author: Thamizhselvanv

ej2-asp-core-mvc/document-editor/text-format.md

@@ -106,6 +106,14 @@ You can make a subscript or superscript text as normal using the following code.
 documenteditor.selection.characterFormat.baselineAlignment='Normal';
 ```
 
+## Change case
+
+You can apply different case formatting based on the selected text. Refer to the following sample code.
+
+```typescript
+documenteditor.editor.changeCase('Uppercase'|'Lowercase'|'SentenceCase'|'ToggleCase'|'CapitalizeEachWord');
+```
+
 ## Size
 
 The size of selected text can be get or set using the following code.
@@ -182,6 +190,6 @@ documenteditor.selection.characterFormat.highlightColor= '#FFC0CB';
 
 ## See Also
 
-* [Feature modules](../document-editor/feature-module/)
-* [Font dialog](../document-editor/dialog/#font-dialog)
-* [Keyboard shortcuts](../document-editor/keyboard-shortcut/)
+* [Feature modules](../document-editor/feature-module)
+* [Font dialog](../document-editor/dialog#font-dialog)
+* [Keyboard shortcuts](../document-editor/keyboard-shortcut)