style: modify TODO comment to match with a title of the existing issue

Relate to #1610
Relate to #748

Author: php-coder

src/main/java/ru/mystamps/web/feature/series/importing/SeriesImportServiceImpl.java

@@ -242,7 +242,7 @@ public void saveParsedData(Integer requestId, SeriesExtractedInfo seriesInfo, Li
 
 		// IMPORTANT: don't add code that modifies database above this line!
 		// @todo #684 Series import: add integration test
-		//  for the case when parsed value don't match database
+		//  for the case when parsed value doesn't match database
 		if (!seriesParsedData.hasAtLeastOneFieldFilled()) {
 			eventPublisher.publishEvent(new ParsingFailed(this, requestId));
 			return;