diff --git a/develop/admin_api/user_admin_api.html b/develop/admin_api/user_admin_api.html
index 39b4bb3e51..61269be951 100644
--- a/develop/admin_api/user_admin_api.html
+++ b/develop/admin_api/user_admin_api.html
@@ -1185,7 +1185,7 @@ being limited.</li>
 <li><code>user_id</code> - The fully qualified MXID: for example, <code>@user:server.com</code>. The user must
 be local.</li>
 </ul>
-<h3 id="check-username-availability"><a class="header" href="#check-username-availability">Check username availability</a></h3>
+<h2 id="check-username-availability"><a class="header" href="#check-username-availability">Check username availability</a></h2>
 <p>Checks to see if a username is available, and valid, for the server. See <a href="https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-register-available">the client-server 
 API</a>
 for more information.</p>
@@ -1196,7 +1196,7 @@ for more information.</p>
 </code></pre>
 <p>The request and response format is the same as the
 <a href="https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-register-available">/_matrix/client/r0/register/available</a> API.</p>
-<h3 id="find-a-user-based-on-their-id-in-an-auth-provider"><a class="header" href="#find-a-user-based-on-their-id-in-an-auth-provider">Find a user based on their ID in an auth provider</a></h3>
+<h2 id="find-a-user-based-on-their-id-in-an-auth-provider"><a class="header" href="#find-a-user-based-on-their-id-in-an-auth-provider">Find a user based on their ID in an auth provider</a></h2>
 <p>The API is:</p>
 <pre><code>GET /_synapse/admin/v1/auth_providers/$provider/users/$external_id
 </code></pre>
@@ -1220,7 +1220,7 @@ for more information.</p>
 }
 </code></pre>
 <p><em>Added in Synapse 1.68.0.</em></p>
-<h3 id="find-a-user-based-on-their-third-party-id-threepid-or-3pid"><a class="header" href="#find-a-user-based-on-their-third-party-id-threepid-or-3pid">Find a user based on their Third Party ID (ThreePID or 3PID)</a></h3>
+<h2 id="find-a-user-based-on-their-third-party-id-threepid-or-3pid"><a class="header" href="#find-a-user-based-on-their-third-party-id-threepid-or-3pid">Find a user based on their Third Party ID (ThreePID or 3PID)</a></h2>
 <p>The API is:</p>
 <pre><code>GET /_synapse/admin/v1/threepid/$medium/users/$address
 </code></pre>
diff --git a/develop/print.html b/develop/print.html
index 8288d5a80e..2346f415aa 100644
--- a/develop/print.html
+++ b/develop/print.html
@@ -14694,7 +14694,7 @@ being limited.</li>
 <li><code>user_id</code> - The fully qualified MXID: for example, <code>@user:server.com</code>. The user must
 be local.</li>
 </ul>
-<h3 id="check-username-availability"><a class="header" href="#check-username-availability">Check username availability</a></h3>
+<h2 id="check-username-availability"><a class="header" href="#check-username-availability">Check username availability</a></h2>
 <p>Checks to see if a username is available, and valid, for the server. See <a href="https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-register-available">the client-server 
 API</a>
 for more information.</p>
@@ -14705,7 +14705,7 @@ for more information.</p>
 </code></pre>
 <p>The request and response format is the same as the
 <a href="https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-register-available">/_matrix/client/r0/register/available</a> API.</p>
-<h3 id="find-a-user-based-on-their-id-in-an-auth-provider"><a class="header" href="#find-a-user-based-on-their-id-in-an-auth-provider">Find a user based on their ID in an auth provider</a></h3>
+<h2 id="find-a-user-based-on-their-id-in-an-auth-provider"><a class="header" href="#find-a-user-based-on-their-id-in-an-auth-provider">Find a user based on their ID in an auth provider</a></h2>
 <p>The API is:</p>
 <pre><code>GET /_synapse/admin/v1/auth_providers/$provider/users/$external_id
 </code></pre>
@@ -14729,7 +14729,7 @@ for more information.</p>
 }
 </code></pre>
 <p><em>Added in Synapse 1.68.0.</em></p>
-<h3 id="find-a-user-based-on-their-third-party-id-threepid-or-3pid"><a class="header" href="#find-a-user-based-on-their-third-party-id-threepid-or-3pid">Find a user based on their Third Party ID (ThreePID or 3PID)</a></h3>
+<h2 id="find-a-user-based-on-their-third-party-id-threepid-or-3pid"><a class="header" href="#find-a-user-based-on-their-third-party-id-threepid-or-3pid">Find a user based on their Third Party ID (ThreePID or 3PID)</a></h2>
 <p>The API is:</p>
 <pre><code>GET /_synapse/admin/v1/threepid/$medium/users/$address
 </code></pre>