Merge pull request #7868 from Snuffleupagus/pageLabels-St-unit-test

Adjust one of the Page Label unit-tests to use a PDF file where the "St" entry is both present and non-default (i.e. greater than one)

test/unit/api_spec.js

@@ -515,7 +515,7 @@ describe('api', function() {
         expect(pageLabels[0]).toEqual(['i', 'ii', 'iii', '1']);
         expect(pageLabels[1]).toEqual(['Front Page1']);
         expect(pageLabels[2]).toEqual(['1', '2']);
-        expect(pageLabels[3]).toEqual(['X1']);
+        expect(pageLabels[3]).toEqual(['X3']);
 
         loadingTask0.destroy();
         loadingTask1.destroy();