CCM-11410: Fix letter template guidance URL (#586)

Author: nicki-nhs

frontend/src/__tests__/components/forms/LetterTemplateForm.test.tsx/__snapshots__/LetterTemplateForm.test.tsx.snap

@@ -395,7 +395,7 @@ exports[`Client-side validation triggers 1`] = `
             <p>
               <a
                 data-testid="pdf-guidance-link"
-                href="/using-nhs-notify/letter-templates"
+                href="/using-nhs-notify/upload-a-letter"
                 rel="noopener noreferrer"
                 target="_blank"
               >
@@ -832,7 +832,7 @@ exports[`hides right-to-left language warning when language changes 1`] = `
             <p>
               <a
                 data-testid="pdf-guidance-link"
-                href="/using-nhs-notify/letter-templates"
+                href="/using-nhs-notify/upload-a-letter"
                 rel="noopener noreferrer"
                 target="_blank"
               >
@@ -1316,7 +1316,7 @@ exports[`renders page one error 1`] = `
             <p>
               <a
                 data-testid="pdf-guidance-link"
-                href="/using-nhs-notify/letter-templates"
+                href="/using-nhs-notify/upload-a-letter"
                 rel="noopener noreferrer"
                 target="_blank"
               >
@@ -1816,7 +1816,7 @@ exports[`renders page with multiple errors 1`] = `
             <p>
               <a
                 data-testid="pdf-guidance-link"
-                href="/using-nhs-notify/letter-templates"
+                href="/using-nhs-notify/upload-a-letter"
                 rel="noopener noreferrer"
                 target="_blank"
               >
@@ -2289,7 +2289,7 @@ exports[`renders page with preloaded field values 1`] = `
             <p>
               <a
                 data-testid="pdf-guidance-link"
-                href="/using-nhs-notify/letter-templates"
+                href="/using-nhs-notify/upload-a-letter"
                 rel="noopener noreferrer"
                 target="_blank"
               >
@@ -2742,7 +2742,7 @@ exports[`shows right-to-left language warning when language changes 1`] = `
             <p>
               <a
                 data-testid="pdf-guidance-link"
-                href="/using-nhs-notify/letter-templates"
+                href="/using-nhs-notify/upload-a-letter"
                 rel="noopener noreferrer"
                 target="_blank"
               >

frontend/src/content/content.ts

@@ -554,7 +554,7 @@ const templateFormLetter = {
   templatePdfLabelText: 'Letter template PDF',
   templatePdfHintText:
     'Your letter must follow our letter specification and be no bigger than 5MB',
-  templatePdfGuidanceLink: '/using-nhs-notify/letter-templates',
+  templatePdfGuidanceLink: '/using-nhs-notify/upload-a-letter',
   templatePdfGuidanceLinkText:
     'Learn how to create letter templates to our specification (opens in a new tab)',
   templateCsvLabelText: 'Example personalisation CSV (optional)',

tests/test-team/template-mgmt-component-tests/letter/template-mgmt-create-letter-template-page.component.spec.ts

@@ -142,7 +142,7 @@ test.describe('Create Letter Template Page', () => {
   const moreInfoLinks = [
     {
       name: 'Learn how to create letter templates to our specification (opens in a new tab)',
-      url: 'using-nhs-notify/letter-templates',
+      url: 'using-nhs-notify/upload-a-letter',
     },
     {
       name: 'Learn how to provide example personalisation data (opens in a new tab)',