Fix branch name (#2121)

I noticed the ACME divergences link lands on a GitHub page with a
warning about falling back to the default branch. This PR fixes that
link, as well as the history links on the translation status page.

Author: divergentdave

themes/le-2021/layouts/shortcodes/docs_index.html

@@ -45,7 +45,7 @@ <h1 id="{{ anchorize (i18n "client_developer_information") }}">{{ i18n "client_d
 <ul>
     <li>{{ template "link" (dict "context" . "page" "/docs/integration-guide") }}</li>
     <li>{{ template "link" (dict "context" . "page" "/docs/acme-protocol-updates") }}</li>
-    <li><a href="https://github.com/letsencrypt/boulder/blob/master/docs/acme-divergences.md">{{ i18n "acme_divergences_rfc" }}</a></li>
+    <li><a href="https://github.com/letsencrypt/boulder/blob/main/docs/acme-divergences.md">{{ i18n "acme_divergences_rfc" }}</a></li>
     <li>{{ template "link" (dict "context" . "page" "/docs/account-id") }}</li>
 </ul>
 

themes/le-2021/layouts/shortcodes/i18n_status.html

@@ -30,7 +30,7 @@
           {{ .RelPermalink }}
         </td>
         <td>
-          <a href='https://github.com/letsencrypt/website/commits/master/content/en/{{ replace .File "\\" "/" }}'>GitHub history</a>
+          <a href='https://github.com/letsencrypt/website/commits/main/content/en/{{ replace .File.Path "\\" "/" }}'>GitHub history</a>
         </td>
         {{ $lastmod := .Lastmod }}
 

themes/le-2025/layouts/shortcodes/docs_index.html

@@ -46,7 +46,7 @@ <h1 id="{{ anchorize (i18n "client_developer_information") }}">{{ i18n "client_d
 <ul>
     <li>{{ template "link" (dict "context" . "page" "/docs/integration-guide") }}</li>
     <li>{{ template "link" (dict "context" . "page" "/docs/acme-protocol-updates") }}</li>
-    <li><a href="https://github.com/letsencrypt/boulder/blob/master/docs/acme-divergences.md">{{ i18n "acme_divergences_rfc" }}</a></li>
+    <li><a href="https://github.com/letsencrypt/boulder/blob/main/docs/acme-divergences.md">{{ i18n "acme_divergences_rfc" }}</a></li>
     <li>{{ template "link" (dict "context" . "page" "/docs/account-id") }}</li>
 </ul>
 

themes/le-2025/layouts/shortcodes/i18n_status.html

@@ -30,7 +30,7 @@
           {{ .RelPermalink }}
         </td>
         <td>
-          <a href='https://github.com/letsencrypt/website/commits/master/content/en/{{ replace .File "\\" "/" }}'>GitHub history</a>
+          <a href='https://github.com/letsencrypt/website/commits/main/content/en/{{ replace .File.Path "\\" "/" }}'>GitHub history</a>
         </td>
         {{ $lastmod := .Lastmod }}