updated configuration

Author: dixyushi

devon4j-http-rest-client/index.asciidoc

@@ -92,7 +92,7 @@ After getting response, you can handle the response further in your implementati
 
 
 ====
-== Configuration 
+## Configuration 
 An application needs to be configurable in order to allow internal setup but also to allow externalized configuration of a deployed package (e.g. integration into runtime environment). 
 Now, You need to modifiy the content of existing properties files and add configuration for Server.
 [step]