update config.json
diff --git a/openlane/user_proj_example/config.json b/openlane/user_proj_example/config.json
index 3f616d0..3c446f2 100644
--- a/openlane/user_proj_example/config.json
+++ b/openlane/user_proj_example/config.json
@@ -16,7 +16,7 @@
"RUN_CVC": 1,
"pdk::sky130*": {
"FP_CORE_UTIL": 45,
- "RT_MAX_LAYER": "{met4}",
+ "RT_MAX_LAYER": "met4",
"scl::sky130_fd_sc_hd": {
"CLOCK_PERIOD": 10
},
@@ -38,7 +38,7 @@
"STD_CELL_LIBRARY": "gf180mcu_fd_sc_mcu7t5v0",
"CLOCK_PERIOD": 24.0,
"FP_CORE_UTIL": 40,
- "RT_MAX_LAYER": "{Metal4}",
+ "RT_MAX_LAYER": "Metal4",
"SYNTH_MAX_FANOUT": 4,
"PL_TARGET_DENSITY": 0.45
}