Removed address_line_x, clientRef, recipientContactValue and template from the bulleted list of personalisation fields from PDS as these are for internal use only.

Restructured the first paragraph under ### Personal Demographics Service (PDS) personalisation fields. This was based off a conversation with Jake and it aims to clarify the link between PDS, NHS numbers and personalisation fields.

Author: emmagifford

docs/pages/using-nhs-notify/personalisation.md

@@ -20,30 +20,20 @@ To personalise a message, use double brackets to add a placeholder to your conte
 
 ### Personal Demographics Service (PDS) personalisation fields
 
-NHS Notify uses the [Personal Demographics Service (PDS)](https://digital.nhs.uk/services/personal-demographics-service) to find and populate certain personalisation fields. You only need to [provide us with recipients' NHS numbers]({% link pages/using-nhs-notify/tell-us-who-you-want-to-message.md %}).
+NHS Notify uses the [Personal Demographics Service (PDS)](https://digital.nhs.uk/services/personal-demographics-service) to find and populate certain personalisation fields for each recipient. This happens automatically when you [tell us who you want to message]({% link pages/using-nhs-notify/tell-us-who-you-want-to-message.md %}) using recipients' NHS numbers.
 
-The personalisation fields available in PDS are:
+You can use the following PDS personalisation fields in your templates:
 
 - fullName
 - firstName
 - middleNames
 - lastName
 - namePrefix
 - nameSuffix
-- address_line_1
-- address_line_2
-- address_line_3
-- address_line_4
-- address_line_5
-- address_line_6
-- address_line_7
 - nhsNumber
 - date
-- clientRef
-- recipientContactValue
-- template
 
-The placeholders in your content need to match the PDS personalisation fields.
+Any placeholders in your content need to match the PDS personalisation fields.
 
 ## Providing your own personalisation data
 
@@ -58,7 +48,7 @@ Include a personalisation block in your API request.
 For example, if you wanted to include 'practice' as a personalisation field, the personalisation block would be:
 
 {% include components/inset-text.html
-    text='{
+text='{
 
     "practice": "PRACTICE_NAME",
 
@@ -71,13 +61,13 @@ Read the [API documentation](https://digital.nhs.uk/developer/api-catalogue/nhs-
 
 Include the personalisation fields as columns in your CSV file.
 
-The column names should start with 'personalisation_', followed by the same wording as the placeholders in your template.
+The column names should start with 'personalisation\_', followed by the same wording as the placeholders in your template.
 
 For example, if you wanted to include 'practice' as a personalisation field, the column name would be:
 
 {% include components/inset-text.html
     text='nhsNumber,requestItemRefId,dateOfBirth,personalisation_practice'
 %}
 
-*[PDS]: Personal Demographics Service
-*[MESH]: Message Exchange for Social Care and Health
+_[PDS]: Personal Demographics Service
+_[MESH]: Message Exchange for Social Care and Health