replacing tabs with spaces to fix example.conf formating

example.conf

@@ -38,20 +38,21 @@ http {
 }
 
 server {
-	listen       8081;
-	server_name  localhost;
+  listen       8081;
+  server_name  localhost;
 
-	location / {
-      # adding ldap authentication
-	    auth_ldap "Closed content";
-      auth_ldap_servers ad_1;
+  location / {
+    # adding ldap authentication
+    auth_ldap "Closed content";
+    auth_ldap_servers ad_1;
 
-	    root   html;
-	    index  index.html index.htm;
+    root html;
+    index index.html index.htm;
 	}
 
-	error_page   500 502 503 504  /50x.html;
-	location = /50x.html {
-	    root   html;
-	}
+  error_page   500 502 503 504  /50x.html;
+
+  location = /50x.html {
+    root html;
+  }
 }