Doc: Match anchor ID and references in docs (#164)

Bump to v11.4.1

Author: karenzone

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 11.4.1
+  - [DOC] Match anchor ID and references for `message_headers` [#164](https://github.com/logstash-plugins/logstash-integration-kafka/pull/164)
+
 ## 11.4.0
   - Add support for setting Kafka message headers in output plugin [#162](https://github.com/logstash-plugins/logstash-integration-kafka/pull/162)
 

docs/output-kafka.asciidoc

@@ -91,7 +91,7 @@ See the https://kafka.apache.org/{kafka_client_doc}/documentation for more detai
 | <<plugins-{type}s-{plugin}-key_serializer>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-linger_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-max_request_size>> |<<number,number>>|No
-| <<plugins-{type}s-{plugin}-message_header>> |<<hash,hash>>|No
+| <<plugins-{type}s-{plugin}-message_headers>> |<<hash,hash>>|No
 | <<plugins-{type}s-{plugin}-message_key>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-metadata_fetch_timeout_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-metadata_max_age_ms>> |<<number,number>>|No
@@ -289,7 +289,7 @@ A map of key value pairs, each corresponding to a header name and its value resp
 Example:
 [source,ruby]
 ----------------------------------
-    message_header => { "event_timestamp" => "%{@timestamp}" }
+    message_headers => { "event_timestamp" => "%{@timestamp}" }
 ----------------------------------
 
 [id="plugins-{type}s-{plugin}-message_key"]

logstash-integration-kafka.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name            = 'logstash-integration-kafka'
-  s.version         = '11.4.0'
+  s.version         = '11.4.1'
   s.licenses        = ['Apache-2.0']
   s.summary         = "Integration with Kafka - input and output plugins"
   s.description     = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline "+