update power rails

openlane/user_project_wrapper/fixed_dont_change/fixed_wrapper_cfgs.tcl

diff --git a/openlane/user_project_wrapper/fixed_dont_change/fixed_wrapper_cfgs.tcl b/openlane/user_project_wrapper/fixed_dont_change/fixed_wrapper_cfgs.tcl
index 2fb79db..636e68b 100644
--- a/openlane/user_project_wrapper/fixed_dont_change/fixed_wrapper_cfgs.tcl
+++ b/openlane/user_project_wrapper/fixed_dont_change/fixed_wrapper_cfgs.tcl
@@ -27,8 +27,7 @@
 set ::env(RUN_CVC) 0
 
 # Pin Configurations. DON'T TOUCH
-set script_dir [file dirname [file normalize [info script]]]
-set ::env(FP_PIN_ORDER_CFG) $script_dir/../../pin_order.cfg
+set ::env(FP_PIN_ORDER_CFG) $::env(DESIGN_DIR)/pin_order.cfg
 
 set ::unit 2.4
 set ::env(FP_IO_VEXTEND) [expr 2*$::unit]