release notes tweaks (#402)

Author: jeff-allen-mongo

source/release-notes.txt

@@ -17,7 +17,7 @@ Release Notes
 
 New Features:
 
-- Export pipelines to Go.
+- Export aggregation pipelines to Go.
 
 - Bump Node driver to version 4.6.0 and embedded shell to version 1.4.1
   (:issue:`COMPASS-5619`).
@@ -50,7 +50,7 @@ Bug fixes:
 
 Bug fixes:
 
-- Aggregation screen no longer showsœ a "Cannot have two html5 backends"
+- Aggregation screen no longer shows a "Cannot have two html5 backends"
   error. (:issue:`COMPASS-5655`)
 
 - Connections that use certificates no longer fail with "option