update plugin header for better search results

ph · ph · commit d6419af4553f · 2017-06-15T20:00:56.000-04:00
diff --git a/docs/index.asciidoc b/docs/index.asciidoc
@@ -14,7 +14,7 @@ END - GENERATED VARIABLES, DO NOT EDIT!
 
 [id="plugins-{type}-{plugin}"]
 
-=== Kafka
+=== Kafka input plugin
 
 include::{include_path}/plugin_header.asciidoc[]
 
