Update specifications/api/swagger.yaml

Co-authored-by: Jonathan Knowles <jonathan.knowles@iohk.io>

specifications/api/swagger.yaml

@@ -2579,7 +2579,7 @@ paths:
       tags: ["Stake Pools"]
       summary: Maintenance actions
       description: |
-        Performs maintenance action on the stake pools, such
+        Performs maintenance actions on stake pools, such
         as triggering metadata garbage collection.
 
         Actions may not be instantaneous.
@@ -3140,4 +3140,3 @@ paths:
 
         Return the current settings.
       responses: *responsesGetSettings
-