Add issue template and other fixes

.github/ISSUE_TEMPLATE/stream_transform.md

diff --git a/.github/ISSUE_TEMPLATE/stream_transform.md b/.github/ISSUE_TEMPLATE/stream_transform.md
new file mode 100644
index 0000000..475bd83
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/stream_transform.md
@@ -0,0 +1,5 @@
+---
+name: "package:stream_transform"
+about: "Create a bug or file a feature request against package:stream_transform."
+labels: "package:stream_transform"
+---
\ No newline at end of file

pkgs/stream_transform/pubspec.yaml

diff --git a/pkgs/stream_transform/pubspec.yaml b/pkgs/stream_transform/pubspec.yaml
index 9cd6584..1ad7013 100644
--- a/pkgs/stream_transform/pubspec.yaml
+++ b/pkgs/stream_transform/pubspec.yaml
@@ -1,7 +1,7 @@
 name: stream_transform
 version: 2.1.1-wip
 description: A collection of utilities to transform and manipulate streams.
-repository: https://github.com/dart-lang/stream_transform
+repository: https://github.com/dart-lang/tools/tree/main/pkgs/stream_transform
 
 environment:
   sdk: ^3.1.0