Fix name of nightly job.

.github/workflows/test-new-xmake-nightly.yml

diff --git a/.github/workflows/test-new-xmake-nightly.yml b/.github/workflows/test-new-xmake-nightly.yml
index 30b076c..3dce3ad 100644
--- a/.github/workflows/test-new-xmake-nightly.yml
+++ b/.github/workflows/test-new-xmake-nightly.yml
@@ -1,4 +1,4 @@
-name: CHERIoT RTOS Tests
+name: Nightly xmake test
 
 on:
   schedule: