Fix usage text of runtest.sh (dotnet/coreclr#10518)

Commit migrated from https://github.com/dotnet/coreclr/commit/e23bfb25d4fde28d2f1648ae381f5e44538b1827

diff --git a/src/coreclr/tests/runtest.sh b/src/coreclr/tests/runtest.sh
index dd5bf51..3ec1e34 100755 (executable)
--- a/src/coreclr/tests/runtest.sh
+++ b/src/coreclr/tests/runtest.sh
@@ -50,7 +50,7 @@ function print_usage {
     echo '  --jitminopts                     : Runs the tests with COMPlus_JITMinOpts=1'
     echo '  --jitforcerelocs                 : Runs the tests with COMPlus_ForceRelocs=1'
     echo '  --jitdisasm                      : Runs jit-dasm on the tests'
-    echo '  --gcstresslevel n                : Runs the tests with COMPlus_GCStress=n'
+    echo '  --gcstresslevel=<n>              : Runs the tests with COMPlus_GCStress=n'
     echo '    0: None                                1: GC on all allocs and '"'easy'"' places'
     echo '    2: GC on transitions to preemptive GC  4: GC on every allowable JITed instr'
     echo '    8: GC on every allowable NGEN instr   16: GC only on a unique stack trace'