tests: Duplicate docs in dummy trainer export

Duplicate the docs in the dummy trainer export to ensure that training
completes successfully.

Signed-off-by: Phoevos Kalemkeris <[email protected]>

Author: phoevos

tests/integration/assets/annotation_stats.csv

@@ -1,18 +1,18 @@
 concept,anno_count,anno_unique_counts,anno_ignorance_counts
-C0017168,2,1,0
-C0020538,8,1,0
-C0012634,2,1,2
-C0038454,2,1,0
-C0007787,2,1,0
-C0155626,4,1,0
-C0011860,6,3,0
-C0042029,8,2,0
-C0010068,2,1,0
-C0007222,2,1,0
-C0027051,2,1,0
-C0878544,2,1,0
-C0020473,6,1,0
-C0037284,4,2,0
-C0003864,4,1,0
-C0011849,2,1,0
-C0338614,2,1,2
+C0017168,6,1,0
+C0020538,24,1,0
+C0012634,6,1,6
+C0038454,6,1,0
+C0007787,6,1,0
+C0155626,12,1,0
+C0011860,18,3,0
+C0042029,24,2,0
+C0010068,6,1,0
+C0007222,6,1,0
+C0027051,6,1,0
+C0878544,6,1,0
+C0020473,18,1,0
+C0037284,12,2,0
+C0003864,12,1,0
+C0011849,6,1,0
+C0338614,6,1,6