fix config for user_project_wrapper

openlane/user_project_wrapper/config.json

diff --git a/openlane/user_project_wrapper/config.json b/openlane/user_project_wrapper/config.json
index c0ef36a..388070c 100644
--- a/openlane/user_project_wrapper/config.json
+++ b/openlane/user_project_wrapper/config.json
@@ -39,8 +39,8 @@
     "FP_PDN_CORE_RING_HWIDTH": 3.1,
     "FP_PDN_CORE_RING_VOFFSET": 12.45,
     "FP_PDN_CORE_RING_HOFFSET": 12.45,
-    "FP_PDN_CORE_RING_VSPACING": 12.45,
-    "FP_PDN_CORE_RING_HSPACING": 12.45,
+    "FP_PDN_CORE_RING_VSPACING": 1.7,
+    "FP_PDN_CORE_RING_HSPACING": 1.7,
     "FP_PDN_VWIDTH": 3.1,
     "FP_PDN_HWIDTH": 3.1,
     "FP_PDN_VSPACING": "expr::(5 * $FP_PDN_CORE_RING_VWIDTH)",