Update config.tcl

sky130/openlane/config.tcl

diff --git a/sky130/openlane/config.tcl b/sky130/openlane/config.tcl
index 666c0ec..946f27c 100755
--- a/sky130/openlane/config.tcl
+++ b/sky130/openlane/config.tcl
@@ -54,6 +54,7 @@
 #else (!EF_FORMAT)
 set ::env(MAGIC_MAGICRC) "$::env(PDK_ROOT)/$::env(PDK)/libs.tech/magic/TECHNAME.magicrc"
 set ::env(MAGIC_TECH_FILE) "$::env(PDK_ROOT)/$::env(PDK)/libs.tech/magic/TECHNAME.tech"
+set ::env(KLAYOUT_TECH) "$::env(PDK_ROOT)/$::env(PDK)/libs.tech/klayout/$::env(PDK).lyt"
 set ::env(KLAYOUT_PROPERTIES) "$::env(PDK_ROOT)/$::env(PDK)/libs.tech/klayout/$::env(PDK).lyp"
 #endif (!EF_FORMAT)