should-get-tests/stanford-Z.should-get: More flexible figures

This is less readable but this avoids changing multiple tests
for the same reason (changing IGHV gene number)

algo/tests/should-get-tests/stanford-Z.should-get

@@ -6,4 +6,4 @@ $ Clone 13 is correctly analyzed
 
 $ Statistics on -Z
 1:Statistics on clone analysis
-rb1: IGH 1579/ 10470 15..%
+rb1: IGH 1[5-7][0-9]{2}/ 1[0-2][0-9]{3} 15..%