stringify 2.10 "branch" field to avoid version getting truncated

mdroth · mdroth · commit 03d020e8995c · 2017-07-25T15:05:34.000-05:00
diff --git a/_data/releases.yml b/_data/releases.yml
@@ -1,4 +1,4 @@
-- branch: 2.10
+- branch: "2.10"
   patch: 0-rc0
   date: "July 25 2017"
 - branch: 2.9
