Add correct accTitle syntax

Author: bielsnohr

episodes/50-section5-intro.md

@@ -32,6 +32,7 @@ and the ways we can successfully manage software improvement in response to feed
 
 ```mermaid
 flowchart LR
+  accTitle: Topics on collaborative software development covered in the current section: issue management, project management, and agile development
   accDescr {Flow chart showing five stages in software management lifecycle: 1. Setting up software environment; 2. Verifying software correctness; 3. Software development as a process; 4. Collaborative development for reuse; 5. Managing software over its lifetime - issue reporting & prioritisation, Agile development in sprints, software project management.}
   A(1. Setting up software environment)
   A --> B(2. Verifying software correctness)