refactor: adjust print for current report summary format

Makefile

diff --git a/Makefile b/Makefile
index 8f049f4..f319f4c 100644
--- a/Makefile
+++ b/Makefile
@@ -321,6 +321,10 @@
 	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk caravel-timing-typ -j3
 	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk caravel-timing-fast -j3
 	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk caravel-timing-slow -j3
+	@echo =================================================Summary=================================================
+	@find $(PROJECT_ROOT)/signoff/caravel/openlane-signoff -name "*-summary.rpt" | head -n1 \
+		| xargs tail -n2 | head -n1
 	@find $(PROJECT_ROOT)/signoff/caravel/openlane-signoff -name "*-summary.rpt" \
 		| xargs -I {} tail -n1 "{}"
+	@echo =========================================================================================================
 	@echo "You can find results for all corners in $(CUP_ROOT)/signoff/caravel/openlane-signoff/timing/"