Fix side nav and typo

Author: sarawilcox

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

@@ -31,7 +31,7 @@
         <ul class="app-side-nav__list app-side-nav__list--nested">
           <li class="app-side-nav__item"><a class="app-side-nav__link" href="#who-this-guidance-is-for">Who this guidance is for</a></li>
           <li class="app-side-nav__item"><a class="app-side-nav__link" href="#writing-effective-messages">Writing effective messages</a></li>
-          <li class="app-side-nav__item"><a class="app-side-nav__link" href="#how-to-write-for-different-channels">How to write for different channels</a></li>
+          <li class="app-side-nav__item"><a class="app-side-nav__link" href="#writing-for-different-channels">Writing for different channels</a></li>
           <li class="app-side-nav__item"><a class="app-side-nav__link" href="#nhs-app-messages">NHS App messages</a></li>
           <li class="app-side-nav__item"><a class="app-side-nav__link" href="#text-messages">Text messages</a></li>
           <li class="app-side-nav__item"><a class="app-side-nav__link" href="#emails">Emails</a></li>
@@ -79,7 +79,7 @@
   <li>find examples and templates to reference when writing your message</li>
 </ul>
 <p>It was developed with input from clinical safety, governance and delivery teams across NHS England. It brings together established writing standards and findings from user research into how NHS messages are read and understood.</p>
-<p>It sits alongside the NHS Messaging best practice section of the NHS England website so teams can plan, write and send messages in a joined-up and consistent way.</p>
+<p>It sits alongside the Messaging best practice section of the NHS England website so teams can plan, write and send messages in a joined-up and consistent way.</p>
 
 <h2 id="writing-effective-messages">Writing effective messages</h2>
 <p>When writing your message always consider the needs of the patient, any clinical safety requirements and the channel you are using to send the message.</p>
@@ -94,7 +94,7 @@
   <li>test your messages with users before sending them</li>
 </ul>
 
-<h2 id="how-to-write-for-different-channels">Writing for different channels</h2>
+<h2 id="writing-for-different-channels">Writing for different channels</h2>
 
 <p>If your service has a fallback strategy you may be required to write the same message for multiple channels.</p>
 <p>Writing messages specifically for the channel means users are more likely to understand and engage with important health-related requests or advice. For example, copying and pasting the contents of a letter into a text message or NHS App message is bad practice as this can create formatting issues and could result in a poor user experience.</p>