Update roadmap.md for clarity and formatting

Author: mchaamsler

docs/general/roadmap.md

@@ -8,7 +8,7 @@ This is the current **roadmap** (*in preparation*) of our Open Data service, whi
 - It allows us to plan for change. It captures intent, not solutions. The further into the future a mission will take place, the more uncertain it is. 
 - Things can be added to or dropped from the roadmap. In the latter case, we document this below under ‘Items removed from the roadmap’, including the date and reason. 
 
-Our roadmap is based on the [long-term **vision** of our service](...). Our **strategy** is delivery.
+Our roadmap is based on the long-term **vision** of our service (*URL forthcoming*). Our **strategy** is delivery.
 
 ## Q1: January until March 2026
 
@@ -42,4 +42,4 @@ Our roadmap is based on the [long-term **vision** of our service](...). Our **st
 </details>
 
 ### Items removed from the roadmap
-(here comes a table with 'date', 'item' and 'reason of removal')
+(*here comes a table with 'date', 'item' and 'reason of removal'*)