Be sure to do all of the following to help us incorporate your contribution
quickly and easily:

 - [ ] Make sure the PR title is formatted like:
   `[BEAM-<Jira issue #>] Description of pull request`
 - [ ] Make sure tests pass via `mvn clean verify`. (Even better, enable
       Travis-CI on your fork and ensure the whole test matrix passes).
 - [ ] Replace "<Jira issue #>" in the title with the actual Jira issue
       number, if there is one.
 - [ ] If this contribution is large, please file an Apache
       [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.txt).

---

Be sure to do all of the following to help us incorporate your contribution
quickly and easily:

 - [ ] Make sure the PR title is formatted like:
   `[BEAM-<Jira issue #>] Description of pull request`
 - [ ] Make sure tests pass via `mvn clean verify`. (Even better, enable
       Travis-CI on your fork and ensure the whole test matrix passes).
 - [ ] Replace `<Jira issue #>` in the title with the actual Jira issue
       number, if there is one.
 - [ ] If this contribution is large, please file an Apache
       [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.txt).

---

Fix third checkbox in Github PR template
Fix third checkbox in Github PR template

Currently "<Jire issue #>" doesn't display in the rendered markdown.
Using backticks allows it to.
