993089: added valid server link for spellcheck in document editor#1890

ManoSF4839 wants to merge 1 commit intohotfix/hotfix-v31.2.12syncfusion-content/document-processing-docs:hotfix/hotfix-v31.2.12from

993089-spellHotsyncfusion-content/document-processing-docs:993089-spellHotCopy head branch name to clipboard