fix typo in pr template

Mic92 · Mic92 · commit 818710e576b3 · 2021-08-10T13:57:18.000+02:00
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
@@ -1,4 +1,4 @@
 Thank you!
 
 Please do your best to include [a regression test](https://github.com/NixOS/patchelf/blob/master/tests/build-id.sh)
-so that the quality of future releases can be perserved.
+so that the quality of future releases can be preserved.
