Clarify that doc fixes are okay in feature freeze

* CONTRIBUTE (branches): Explain that doc fixes are always safe, even
on a release branch in feature freeze.  Tweak wording of paragraph
after that to avoid a misleading contrast.

1 files changed, 4 insertions, 2 deletions

diff --git a/CONTRIBUTE b/CONTRIBUTE
index a02acadc73f..c12f0cc08db 100644
--- a/CONTRIBUTE
+++ b/CONTRIBUTE
@@ -191,9 +191,11 @@ branch later by the gitmerge function.
 
 Documentation fixes (in doc strings, in manuals, and in comments)
 should always go to the release branch, if the documentation to be
-fixed exists and is relevant to the release-branch codebase.
+fixed exists and is relevant to the release-branch codebase.  Doc
+fixes are always considered "safe" -- even when a release branch is in
+feature freeze, it can still receive doc fixes.
 
-However, if you know that the change will be difficult to merge to the
+When you know that the change will be difficult to merge to the
 master (e.g., because the code on master has changed a lot), you can
 apply the change to both master and branch yourself.  It could also
 happen that a change is cherry-picked from master to the release