Fix link to Messaging best practice site

Author: sarawilcox

app/views/content/writing-nhs-messages.njk

@@ -68,7 +68,7 @@
 {% call insetText({
   classes: "nhsuk-u-margin-top-4"
 }) %}
-  <p>If you need guidance on messaging strategy, governance requirements, or using NHS Notify visit the <a href="https://digital.nhs.uk/services/nhs-messaging-best-practice">NHS Messaging best practice section of the NHS England website</a>.</p>
+  <p>If you need guidance on messaging strategy, governance requirements, or using NHS Notify visit the <a href="https://digital.nhs.uk/services/messaging-best-practice">Messaging best practice section of the NHS England website</a>.</p>
 {% endcall %}
 
 <p>Use this guidance if you want to:</p>
@@ -328,7 +328,7 @@
 
 <p><a href="https://notify.nhs.uk/using-nhs-notify/tell-recipients-who-your-messages-are-from#email-sender-name-and-from-email-address">Read more about email sender name and from email address on the NHS Notify website</a>.</p>
 
-<p>For the email subject line use something specific like "Your GP appointment reminder" or "NHS vaccination invitation" rather than a generic "NHS invite". Keeping subject lines short will make your email stand out in a patient's inbox and more likely to be opened and read.</p>
+<p>For the email subject line use something specific like "Your GP appointment reminder" or "NHS vaccination invitation" rather than a generic "NHS invite". Keeping subject lines short will make your email stand out in a patient's inbox and is more likely to be opened and read.</p>
 
 <h3 id="email-message-examples">Email message examples</h3>