Fix markdown

Author: xerial

README.md

@@ -1,8 +1,7 @@
-fluent-logger-scala [![Build Status](https://travis-ci.org/fluent/fluent-logger-scala.svg?branch=develop)](https://travis-ci.org/fluent/fluent-logger-scala)
-![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.fluentd/fluent-logger-scala_2.12/badge.svg) [![Scaladoc](http://javadoc-badge.appspot.com/org.fluentd/fluent-logger-scala_2.12.svg?label=scaladoc)](http://javadoc-badge.appspot.com/org.fluentd/fluent-logger-scala_2.12)
+fluent-logger-scala [![Build Status](https://travis-ci.org/fluent/fluent-logger-scala.svg?branch=develop)](https://travis-ci.org/fluent/fluent-logger-scala) ![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.fluentd/fluent-logger-scala_2.12/badge.svg) [![Scaladoc](http://javadoc-badge.appspot.com/org.fluentd/fluent-logger-scala_2.12.svg?label=scaladoc)](http://javadoc-badge.appspot.com/org.fluentd/fluent-logger-scala_2.12)
+==========
 
-====
-Fluentd logger for Scala
+# Fluentd logger for Scala
 
 Many web/mobile applications generate huge amount of event logs (c,f. login, logout, purchase, follow, etc). To analyze these event logs could be really valuable for improving the service. However, the challenge is collecting these logs easily and reliably.