fix: Typo

Signed-off-by: 白日梦主义 <37233261+Cherrling@users.noreply.github.com>

Author: Cherrling

doc/_admin-guide/070_Destinations/100_Kafka-c/000_Before_you_begin.md

@@ -47,7 +47,7 @@ implementation, using only the required parameters.
 @include "scl.conf"
 
 destination d_kafka {
-    kafka(
+    kafka-c(
     bootstrap-servers("1.2.3.4:9092,192.168.0.2:9092")
     topic("{MYTOPIC}")
     );