Update README.md

cadcTomcat/README.md

@@ -16,7 +16,9 @@ This plugin will authenticate users who enter with a userid and password.  The a
  
 To use this plugin, add the following line to the <Host> element (within the <Service> element) in the tomcat 7 server.xml file:
 
-> <Realm className="ca.nrc.cadc.tomcat.CadcBasicAuthenticator" />
+``` 
+<Realm className="ca.nrc.cadc.tomcat.CadcBasicAuthenticator" />
+```
  
 ## CADC SSL Plugin