docs: fix grammar in bug report issue template (#194)

**What**:

Minor grammar fix in comment in bug report issue template.

**Checklist**:

- [ ] Documentation N/A
- [ ] Tests N/A
- [x] Ready to be merged
- [ ] Added myself to contributors table (I'm good 😄)

Author: theneva

.github/ISSUE_TEMPLATE/Bug_Report.md

@@ -9,7 +9,7 @@ about: Bugs, missing documentation, or unexpected behavior 🤔.
   understand what's going on and fix the issue. We appreciate bugs filed and PRs
   submitted!
 
-* If you're issue is regarding one of the query APIs (`getByText`
+* If your issue is regarding one of the query APIs (`getByText`,
   `getByLabelText`, etc), then please file it on the `dom-testing-library`
   repository instead. If you file it here it will be closed. Thanks :)