spelling, style tweaks

Mostly correcting stuff caught by my spell checker.

policy/tpa-rfc-26-limesurvey-upgrade.md

@@ -6,18 +6,17 @@ title: TPA-RFC-26: LimeSurvey upgrade
 
 # Background
 
-The `survey.torproject.org` service has been unmaintained for a long period,
+The `survey.torproject.org` service has been unmaintained for a long time,
 during which multiple security vulnerabilities were disclosed and fixed by the
 upstream LimeSurvey project.
 
-Furthermore, our current deployment is based on LimeSurvey 3.x which is due to
-become end-of-life soon, although no specific annoucenement has been made yet in
-that regard by the upstream developpers.
+Furthermore, our current deployment is based on LimeSurvey 3.x which
+is end-of-life soon, although no specific announcement has been made
+yet in that regard by the upstream developers.
 
 # Proposal
 
-It's proposed that TPA deploys a new server with a clean LimeSurvey 5.x
-installation
+TPA will deploy a new server with a clean LimeSurvey 5.x installation
 
 TPA will take care of transferring the configuration (question structure only)
 of previous surveys (40 total) to the new LimeSurvey instance, as well as the
@@ -41,13 +40,13 @@ on to [survey.torproject.org][] and delete these surveys before July 6.
 
 ## Timeline
 
- * July 5 to 12: new LimeSurvey 5 instance setup by TPA
+ * July 5 to 12: new LimeSurvey 5 instance deployed by TPA
 
- * July 13: the new instance will be up and accessible
+ * July 13: the new instance available
 
- * July 22: deadline to review surveys migrated by TPA
+ * July 22: deadline to review the surveys migrated by TPA
 
- * August 1st: LimeSurvey 3 instance will be retired
+ * August 1st: old (LimeSurvey 3) instance shutdown
 
 The retirement of the LimeSurvey 3 instance will destroy all survey data,
 configuration and responses which have not been exported or migrated to the new
@@ -66,12 +65,12 @@ instance.
 
 ### Non-Goals
 
- * Audit the current LimeSurver 3.x codebase and data
+ * Audit the current LimeSurver 3.x code base and data
 
 ## Affected users
 
 This change will affect all survey authors, including but not limited to
-members of the comms, UX and community teams.
+members of the communications, UX and community teams.
 
 # Alternatives considered