github/workflows: fix synth filename

.github/workflows/user_project_ci.yml

diff --git a/.github/workflows/user_project_ci.yml b/.github/workflows/user_project_ci.yml
index 150a213..c2abcdf 100644
--- a/.github/workflows/user_project_ci.yml
+++ b/.github/workflows/user_project_ci.yml
@@ -265,7 +265,7 @@
         python << EOF
         import graphviz
         dot = graphviz.Source.from_file('openlane/tiny_user_project/runs/tiny_user_project/tmp/synthesis/post_techmap.dot')
-        dot.render('synth.svg', format='svg')
+        dot.render('tiny_user_project_synth.svg', format='svg')
         EOF
     - name: create layout svg
       run: |