fix ignore statement

Author: Felix Exner

.github/workflows/ci.yml

@@ -67,7 +67,7 @@ jobs:
             --exclude=tcp_socket.cpp \
             --exclude-dir=debian \
             --exclude=real_time.md \
-            --exclude=scripts/start_ursim.sh
+            --exclude=start_ursim.sh
 
   rosdoc_lite_check:
     runs-on: ubuntu-latest