fix README

README.md

@@ -12,7 +12,7 @@ Configuration
 
 A sample configuration to setup ingestion of data for a tag to Wendelin:
 
-```apache
+```
 <match your.sensor.tag>
   @type wendelin
   @id wendelin_out
@@ -20,7 +20,7 @@ A sample configuration to setup ingestion of data for a tag to Wendelin:
   streamtool_uri    <Wendelin_URL>/erp5/portal_ingestion_policies/<YOUR_INGESTION_POLICY_ID>
   user      <your_wendelin_user>
   password  <your_wendelin_password>
-  use_keep_alive <true/false>
+  use_keep_alive  <true or false>
 
   # all parameters of BufferedOutput & Output classes are supported too, e.g.
   # `buffer_type`, `flush_interval`, `num_threads`, `log_level`, etc - see