meta: update pull request template (#1086)

Author: dingsdax

.github/pull_request_template.md

@@ -1,11 +1,13 @@
-<!--
-
-Hey, thanks for your contribution!
-
-The Sentry team has finite resources and priorities that are not always visible on GitHub.
-Please help us save time when reviewing your PR by following this two-step guide:
-
-1. Is your PR a simple typo fix? __Click that green "Create pull request" button__!
-2. For more complex PRs, please read https://github.com/getsentry/sentry-go/blob/master/CONTRIBUTING.md
+### Description
+<!-- What changed and why? -->
 
+#### Issues
+<!--
+* resolves: #1234
+* resolves: LIN-1234
 -->
+
+#### Reminders
+- Add GH Issue ID _&_ Linear ID
+- PR title should use [conventional commit](https://develop.sentry.dev/engineering-practices/commit-messages/#type) style (`feat:`, `fix:`, `ref:`, `meta:`)
+- For external contributors: [CONTRIBUTING.md](https://github.com/getsentry/sentry-go/blob/master/CONTRIBUTING.md), [Sentry SDK development docs](https://develop.sentry.dev/sdk/), [Discord community](https://discord.gg/Ww9hbqr)