docs: update ADR README

Author: bryanchriswhite

ADRs/README.md

@@ -34,13 +34,30 @@ The generated ADR can then be reviewed and refined by the team members to ensure
 To contribute a new ADR, please follow these steps:
 
 1. Create a new branch for your ADR.
-2. Copy the ADR template from `ADR_TEMPLATE.md` and create a new file with the appropriate number and title (e.g., `ADR0003-adopting-multiaddr.md`).
+2. Copy the ADR template from `ADR_TEMPLATE.md` and create a new file with the next ADR number and title (e.g., `ADR0001-adopt-multiaddr.md`).
 3. Fill in the necessary information in the new ADR file, following the template structure.
 4. Use the large language model prompts, if desired, to generate or refine the ADR content.
 5. Submit a pull request to merge your ADR branch into the main branch, including a brief description of the problem and solution.
 6. Request a review from the team members, and address any feedback or suggestions provided.
 7. Once approved, merge the pull request to update the repository with the new ADR.
 
+## Process Flowchart
+
+```mermaid
+stateDiagram
+    state "In Review" as review
+    state "Changes Needed" as change
+    
+    Idea --> Draft : Author opens a PR
+    Draft --> review : PR is marked 'Ready for Review'
+    review --> change : Reviewer requests changes
+    change --> review : Reviewer approves changes
+    review --> Accepted : PR is merged
+
+    Draft --> Withdrawn : PR is closed
+    review --> Withdrawn: PR is closed
+```
+
 ## Links
 
 - [ADR GitHub org](https://adr.github.io/)