Fixed broken link fragments

Author: emmagifford

docs/pages/using-nhs-notify/letter-templates.md

@@ -132,7 +132,7 @@ If you do not want a paragraph to run over different pages, add a page break bef
 2. Select 'Pages'.
 3. Select 'Page break'.
 
-## Links
+## Links and URLs
 
 Use the style 'Hyperlink' in the template for links.
 

docs/pages/using-nhs-notify/upload-a-letter.md

@@ -17,7 +17,7 @@ Your PDF must meet our letter specification. The page size and layout is A4 port
 
 You'll need to:
 
-1. [Download our blank Word letter template](#how-to-use-our-letter-template).<!-- markdownlint-disable-line -->
+1. [Download our blank Word letter template](#download-our-blank-letter-template).<!-- markdownlint-disable-line -->
 2. [Format your letter](#formatting-your-letter).
 3. [Convert your letter to a PDF](#converting-your-letter-to-a-pdf).
 4. Email your letter PDF to our onboarding team at <[email protected]>.