Updated nightly build script

Author: wakaleo

.github/workflows/nightly-build.yml

@@ -37,11 +37,7 @@ jobs:
           - sample-code/module-20-docker-start
           - sample-code/module-20-docker
           - sample-code/end-to-end
-    name: Build (${{
-      matrix.branch == 'main'
-      && 'main'
-      || (matrix.branch startsWith('sample-code/') && format('{0}', matrix.branch[12:]) || matrix.branch)
-      }})
+    name: Build (${{matrix.branch | replace('sample-code/', '')}})
 
     steps:
       # Check out the repository code for the specific branch