[syn] Fix an error in the DC synthesis setup

Signed-off-by: Michael Schaffner <msf@google.com>

hw/syn/data/dc.hjson

diff --git a/hw/syn/data/dc.hjson b/hw/syn/data/dc.hjson
index 6230bae..3dec810 100644
--- a/hw/syn/data/dc.hjson
+++ b/hw/syn/data/dc.hjson
@@ -5,7 +5,7 @@
   // The tool sources include the technology setup file,
   // the main synthesis run script and the constraints file
   tool_srcs: ["{proj_root}/hw/foundry/syn/{tool}/setup.tcl"
-  tool_srcs: ["{proj_root}/hw/foundry/syn/{tool}/lib-setup.tcl"
+              "{proj_root}/hw/foundry/syn/{tool}/lib-setup.tcl"
               "{proj_root}/hw/foundry/syn/{tool}/ram-macros-setup.tcl"
               "{proj_root}/hw/syn/tools/{tool}/run-syn.tcl"
               "{sdc_path}/{sdc_file}"]