Update lint-propoposal.md (dart-lang/lints#115)

diff --git a/pkgs/lints/.github/ISSUE_TEMPLATE/lint-propoposal.md b/pkgs/lints/.github/ISSUE_TEMPLATE/lint-propoposal.md
index 741636d..25571ac 100644
--- a/pkgs/lints/.github/ISSUE_TEMPLATE/lint-propoposal.md
+++ b/pkgs/lints/.github/ISSUE_TEMPLATE/lint-propoposal.md
@@ -1,6 +1,6 @@
 ---
-name: Lint proposal
-about: Propose adding an existing lint rule to a defined rule set.
+name: Add an existing lint to the `core` or `recommended` rule set
+about: Propose adding an existing lint rule to the `core` or `recommended` rule set.
 title: ''
 labels: type-lint
 assignees: ''