update PULL_REQUEST_TEMPLATE.md

Author: iteman

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,12 +1,10 @@
 | Q             | A
 | ------------- | ---
-| Branch?       | "master" for new features
+| Branch?       | master for new features / 1.0 for fixes
 | Bug fix?      | yes/no
 | New feature?  | yes/no
 | BC breaks?    | yes/no
 | Deprecations? | yes/no
 | Tests pass?   | yes/no
 | Fixed tickets | comma-separated list of tickets fixed by the PR, if any
 | License       | BSD-2-Clause
-
-[the description of this PR]