fix inconsistency in config

Author: beasteers

config/pg_featureserv.toml.example

@@ -69,7 +69,7 @@ WriteTimeoutSec = 30
 # FunctionIncludes = [ "postgisftw", "schema2" ]
 
 # Designate a column as the feature ID (where primary key is not available e.g. views/functions)
-IdColumn = "id"
+# IdColumn = "id"
 
 [Paging]
 # The default number of features in a response