Add a warning about this being the docs for 4.X

diff --git a/docs/markdown/theme/content.html b/docs/markdown/theme/content.html
index 475ffbb765e1cb380d100a6c7ca8481be5e4fe19..24dea66b2373ffcbc9a2b2a443b7b1511a5192dd 100644 (file)
--- a/docs/markdown/theme/content.html
+++ b/docs/markdown/theme/content.html
@@ -6,4 +6,6 @@
 </div>
 {% endif %}
 
+<span class="alert alert-danger">This document is about PowerDNS 4.X. If you have PowerDNS 3.X, please see the <a href="/3">PowerDNS 3.X documentation</a></span><br>
+
 {{ content }}