[s390]tm family test: change a label name

Change-Id: I43f342c3552e195fe5d96b07c93be7bfef5a708a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1713006Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#62859}

test/cctest/test-assembler-s390.cc

@@ -973,7 +973,7 @@ TEST(18) {
   // selected bits all 0
   __ lgfi(r1, Operand(0));
   __ tmhh(r1, Operand(1));
-  __ beq(&done); //8
+  __ beq(&continue1); //8
   __ b(&error);
 
   __ bind(&continue1);