Update user_project_wrapper CLOCK_PERIOD

openlane/user_project_wrapper/config.tcl

diff --git a/openlane/user_project_wrapper/config.tcl b/openlane/user_project_wrapper/config.tcl
index b5c0dde..6d5581d 100755
--- a/openlane/user_project_wrapper/config.tcl
+++ b/openlane/user_project_wrapper/config.tcl
@@ -44,7 +44,7 @@
 set ::env(BASE_SDC_FILE) $script_dir/base.sdc
  
 # Speed up?
-set ::env(CLOCK_PERIOD) "30"
+set ::env(CLOCK_PERIOD) "20"
 
 ## Internal Macros
 ### Macro PDN Connections