[DOC-13702]: Write documentation for the Release Note Generator

Author: RayOffiah

home/modules/contribute/pages/release-note-generator/design-guide.adoc

@@ -31,25 +31,26 @@ When deciding on the design of the Couchbase Release Note Generator, the team co
 The script is designed to be flexible and extendable.
 It uses a modular architecture that allows for the addition of new products and formats.
 
-[plantuml]
+[mermaid]
 ----
-@startuml
-skin rose
-
-database "Couchbase\n jira \n database" as jira
-
-component "CB Release Notes Generator\n(Python script)" as script
-file "Generated\n AsciiDoc\n file" as asciidoc
-file "templates\n(Jinja)" as template
-file "configuration file\n(YAML)" as configuration
-actor "Documentarian" as user
-
-jira --> script
-configuration --> script
-template --> script
-script --> asciidoc
-user --> script
-@enduml
+flowchart LR
+jira@{shape: disk, label: "Couchbase\n JIRA\n database"}
+script@{shape: process, label: "CB Release Notes Generator\n (Python script)"}
+configuration@{shape: docs, label: "configuration files"}
+templates@{shape: docs, label: "jinja\ntemplates"}
+asciidoc@{shape: lined-document, label: "Generated\n AsciiDoc file"}
+user@{ shape: manual-input, label: "Documentarian"}
+
+jira JtoS@====> script
+templates TtoS@====> script
+configuration CtoS@====> script
+script StoA@====> asciidoc
+user ====> script
+
+JtoS@{animation: slow, curve: linear}
+TtoS@{animation: slow, curve: linear}
+CtoS@{animation: slow, curve: linear}
+StoA@{animation: slow, curve: linear}
 ----
 
 . On invocation, the script loads the `release sets` from the configuration file,