Remove markdown diagrams

Signed-off-by: JeffMboya <jangina.mboya@gmail.com>

Author: JeffMboya

docs/fml.md

@@ -236,6 +236,8 @@ SuperMQ provides the underlying MQTT messaging infrastructure that enables async
 
 ## Training Round Lifecycle
 
+![The FML Model Lifecycle](images/fml-model-lifecycle.png)
+
 ### 1. Round Initialization
 
 An external trigger (test script, API call, or scheduled job) sends an HTTP POST request to the Manager's `/fl/experiments` endpoint with the experiment configuration: