fix typo in driver for sysv_aa_2stage to run correct error checker

Author: dklyuchinskiy

TESTING/LIN/zdrvsy_aa_2stage.f

@@ -229,7 +229,7 @@ SUBROUTINE ZDRVSY_AA_2STAGE(
 *     Test path
 *
       PATH( 1: 1 ) = 'Zomplex precision'
-      PATH( 2: 3 ) = 'H2'
+      PATH( 2: 3 ) = 'S2'
 *
 *     Path to generate matrices
 *