Merge pull request #6089 from EnterpriseDB/docs/edits_to_pgd_pr6048

Edits to PGD: improve description of "transaction_id" pseudo-GUC PR6048

product_docs/docs/pgd/5/reference/functions.mdx

@@ -46,8 +46,8 @@ Returns the current subscription statistics.
 
 ## System and progress information parameters
 
-PGD exposes some parameters that you can query directly in SQL using e.g.
-`SHOW` or the `current_setting()` function, and/or using `PQparameterStatus`
+PGD exposes some parameters that you can query directly in SQL using, for example,
+`SHOW` or the `current_setting()` function. You can also use `PQparameterStatus`
 (or equivalent) from a client application.
 
 ### `bdr.local_node_id`
@@ -68,9 +68,9 @@ becomes remotely visible.
 
 ### `transaction_id`
 
-If a CAMO transaction is in progress, `transaction_id` will be updated to show
-the assigned transaction id. Note that this parameter can only be queried
-using `PQparameterStatus` or equivalent. See section [Application use](../durability/camo#application-use)
+If a CAMO transaction is in progress, `transaction_id` is updated to show
+the assigned transaction id. You can query this parameter only by using
+using `PQparameterStatus` or equivalent. See [Application use](../durability/camo#application-use)
 for a usage example.
 
 ### `bdr.is_node_connected`