Whitespace fix in CHANGELOG.md

Author: yaauie

CHANGELOG.md

@@ -1,6 +1,6 @@
 ## 4.1.0
-- add improved proactive rate-limiting, rejecting new requests when queue has been actively blocking for more than 10 seconds [#186](https://github.com/logstash-plugins/logstash-input-http/pull/186)
-  - This is a forward-port of functionality also introduced to the 3.x series in 3.10.0 
+  - add improved proactive rate-limiting, rejecting new requests when queue has been actively blocking for more than 10 seconds [#186](https://github.com/logstash-plugins/logstash-input-http/pull/186)
+    - This is a forward-port of functionality also introduced to the 3.x series in v3.10.0 
 
 ## 4.0.0
   - SSL settings that were marked deprecated in version `3.7.0` are now marked obsolete, and will prevent the plugin from starting.