fix(postgis): remove confusing leading / character for system path

Signed-off-by: Gabriele Bartolini <gabriele.bartolini@enterprisedb.com>

Author: gbartolini

postgis/metadata.hcl

@@ -5,7 +5,7 @@ metadata = {
   shared_preload_libraries = []
   extension_control_path   = []
   dynamic_library_path     = []
-  ld_library_path          = ["/system"]
+  ld_library_path          = ["system"]
   auto_update_os_libs      = true
   required_extensions      = []