typo (#208)

Author: DLeyland

integrations/incident-io.mdx

@@ -10,7 +10,7 @@ The incident.io integration is available on Grow \+ Scale tiers.
 
 - **Create new incident.io incidents** from any support request in Plain.
 - **Link existing open incident.io incidents** to a thread to track status and coordinate updates.
-- **Link closed incidents **to make post-incident clean-up much smoother. 
+- **Link closed incidents** to make post-incident clean-up much smoother. 
 - **Track resolution status**: when a linked incident is marked as resolved in incident.io, the thread in Plain automatically moves back to your TODO list – so you don't forget to close the loop.
 - **Assign key incident fields** like severity, team, and service – without ever leaving Plain.