chore(common): typos

Author: marin-bratanov

_contentTemplates/common/general-info.md

@@ -1,5 +1,5 @@
 #event-callback-can-be-async
->tip The event is an `EventCallback` and it can be syncronous (return `void`), or it can also be asynchronous and return `async Task`.
+>tip The event is an `EventCallback` and it can be synchronous (return `void`), or it can also be asynchronous and return `async Task`.
 #end
 
 #ensure-nuget-packge-for-upgrade

components/checkbox/events.md

@@ -150,7 +150,7 @@ The `OnChange` event fires every time the `Value` parameter changes. The key dif
 
 ## IndeterminateChanged
 
-The `IndeterminateChanged` event fires every time the `Indeterminate` parameter changes. The component does this when the chekbox was indeterminate and the user clicks it to toggle it to a checked/unchecked state. If you toggle the parameter value yourself, the event will not be raised.
+The `IndeterminateChanged` event fires every time the `Indeterminate` parameter changes. The component does this when the checkbox was indeterminate and the user clicks it to toggle it to a checked/unchecked state. If you toggle the parameter value yourself, the event will not be raised.
 
 >caption Handle IndeterminateChanged event