docs(examples): increase httpd ProxyTimeout value (2)

Author: vanquisher0411

examples/cluster-httpd/httpd/httpd.conf

@@ -51,4 +51,5 @@ RewriteRule /(.*) balancer://nodes_ws/$1 [P,L]
 RewriteCond %{HTTP:Upgrade} !=websocket [NC]
 RewriteRule /(.*) balancer://nodes_polling/$1 [P,L]
 
-ProxyTimeout 60 # must be bigger than pingInterval (25s by default) + pingTimeout (20s by default)
+# must be bigger than pingInterval (25s by default) + pingTimeout (20s by default)
+ProxyTimeout 60