missing_pages.html: Add timespec_getres3() to list of missing pages

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
diff --git a/missing_pages.html b/missing_pages.html
index 3e0f988..f206a58 100644
--- a/missing_pages.html
+++ b/missing_pages.html
@@ -993,6 +993,18 @@
 
   <tr>
     <td>
+      <span class="man-page">timespec_getres(3)</span>
+    </td>
+    <td>
+      2.34
+    </td>
+    <td>
+      New C2X function, needs _ISOC2X_SOURCE
+    </td>
+  </tr>
+
+  <tr>
+    <td>
       <span class="man-page">obstack_alloc_failed_handler(3)</span>
       <br>
       <span class="man-page">obstack_exit_failure(3)</span>