[ADF-1549] Added doc files for Processlist library (#2353)

docs/process-comments.component.md

@@ -0,0 +1,28 @@
+# Process Instance Comments component
+
+Displays comments associated with a particular process instance and allows the user to add new comments
+
+<!-- markdown-toc start - Don't edit this section.  npm run toc to generate it-->
+
+<!-- toc -->
+
+- [Basic Usage](#basic-usage)
+  * [Properties](#properties)
+
+<!-- tocstop -->
+
+<!-- markdown-toc end -->
+
+## Basic Usage
+
+```html
+<adf-process-instance-comments 
+    processInstanceId="YOUR_PROCESS_INSTANCE_ID">
+</adf-process-instance-comments>
+```
+
+### Properties
+
+| Name | Type | Description |
+| --- | --- | --- |
+| processInstanceId | string | (**required**): The numeric ID of the process instance to display comments for |