Update src/dbnode/integration/options.go

Co-authored-by: Linas Medžiūnas <[email protected]>

src/dbnode/integration/options.go

@@ -297,7 +297,7 @@ type TestOptions interface {
 	// SetStorageOptsFn sets the StorageOpts modifier.
 	SetStorageOptsFn(StorageOption) TestOptions
 
-	// StorageOptsFn returns the StorageOpts modifier
+	// StorageOptsFn returns the StorageOpts modifier.
 	StorageOptsFn() StorageOption
 }