Fix default value for pg_stat_statements_view (#17400)

Author: sethsamuel

postgres/assets/configuration/spec.yaml

@@ -402,6 +402,7 @@ files:
       value:
         type: string
         example: show_pg_stat_statements()
+        display_default: pg_stat_statements
     - name: query_metrics
       description: Configure collection of query metrics
       options:

postgres/changelog.d/17400.fixed

@@ -0,0 +1 @@
+Fix default value for pg_stat_statements_view

postgres/datadog_checks/postgres/config_models/defaults.py

@@ -109,7 +109,7 @@ def instance_min_collection_interval():
 
 
 def instance_pg_stat_statements_view():
-    return 'show_pg_stat_statements()'
+    return 'pg_stat_statements'
 
 
 def instance_port():

postgres/datadog_checks/postgres/data/conf.yaml.example

@@ -311,7 +311,7 @@ instances:
     #
     # dbm: false
 
-    ## @param pg_stat_statements_view - string - optional - default: show_pg_stat_statements()
+    ## @param pg_stat_statements_view - string - optional - default: pg_stat_statements
     ## Set this value if you want to define a custom view or function to allow the datadog user to query the
     ## `pg_stat_statements` table, which is useful for restricting the permissions given to the datadog agent.
     ## Please note this is an ALPHA feature and is subject to change or deprecation without notice.