Update .github/ISSUE_TEMPLATE/documentation.md

Co-authored-by: Christoph Kuhnke <[email protected]>

.github/ISSUE_TEMPLATE/documentation.md

@@ -31,7 +31,7 @@ Further references to e.g. other information resources like links to specificati
 
 # Task(s)
 <!---
-A task list containing common task associated with this kind of issue, but also tasks specific to this issue.
+A task list containing common tasks associated with this kind of issue, but also tasks specific to this issue.
 
 e.g.:
 - [ ] Update documentation of XYZ