fix: typo in spm test group.

Fixed typo in test group, test group name should be 'spm-l2-boot-tests'
but it was accidently renamed by this patch[1] as 'spm-l2-boot-test'.

[1]: https://review.trustedfirmware.org/c/ci/tf-a-job-configs/+/24913

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I5e5e7ebb132a09f06c2e9fdf2b98322be744499f
diff --git a/tf-a-tftf-main.yaml b/tf-a-tftf-main.yaml
index fa3e672..59b222d 100644
--- a/tf-a-tftf-main.yaml
+++ b/tf-a-tftf-main.yaml
@@ -128,7 +128,7 @@
               name: tf-a-ci-gateway
               alias: spm-l2-boot-tests tf-l2-boot-tests-spm-mm
               predefined-parameters: |-
-                TEST_GROUPS=spm-l2-boot-test tf-l2-boot-tests-spm-mm
+                TEST_GROUPS=spm-l2-boot-tests tf-l2-boot-tests-spm-mm
               property-file: tf-a-tests-env.param
             - current-parameters: true
               kill-phase-on: NEVER