Update coding_standards.html

Author: lefticus

coding_standards.html

@@ -25,7 +25,7 @@ <h3>ChaiScript strives for the highest quality and most portable C++ possible</h
 </div>
 
 <div class="alert alert-success">
-  <a class="alert-link" href="https://cppbestpractices.com">Coding Standards in their entirety.</a>
+  <a class="alert-link" href="http://cppbestpractices.com">Coding Standards in their entirety.</a>
 </div>