Update commonmark-ext-gfm-alerts/src/main/java/org/commonmark/ext/gfm/alerts/internal/AlertPostProcessor.java

Author: robinst

commonmark-ext-gfm-alerts/src/main/java/org/commonmark/ext/gfm/alerts/internal/AlertPostProcessor.java

@@ -87,6 +87,7 @@ private void tryConvertToAlert(BlockQuote blockQuote) {
 
         // Valid alert. Create Alert node and transfer children.
         var alert = new Alert(type);
+        alert.setSourceSpans(blockQuote.getSourceSpans());
         blockQuote.insertAfter(alert);
 
         // Remove the marker text from the first paragraph