add links to process diagram

docs/process.md

@@ -9,7 +9,7 @@ nav_order: 4
 
 ```mermaid
 sequenceDiagram
-    Note over Professor,Student: 1. Initial meetings to discuss the general topic
+    Note over Professor,Student: "<a href="../#1-initial-meetings-to-discuss-the-general-topic">1. Initial meetings</a>"
     Note over Student,Examination office: 2. Formal admission
     Student->>Examination office: Apply for admission
     activate Examination office