update the publishing script (dart-lang/io#96)

pkgs/io/.github/workflows/publish.yaml

diff --git a/pkgs/io/.github/workflows/publish.yaml b/pkgs/io/.github/workflows/publish.yaml
index ef785c7..fcb7ccb 100644
--- a/pkgs/io/.github/workflows/publish.yaml
+++ b/pkgs/io/.github/workflows/publish.yaml
@@ -11,4 +11,4 @@
 jobs:
   publish:
     if: ${{ github.repository_owner == 'dart-lang' }}
-    uses: devoncarew/firehose/.github/workflows/publish.yaml@main
+    uses: dart-lang/ecosystem/.github/workflows/publish.yaml@main

pkgs/io/README.md

diff --git a/pkgs/io/README.md b/pkgs/io/README.md
index bd36a55..3f199d5 100644
--- a/pkgs/io/README.md
+++ b/pkgs/io/README.md
@@ -100,5 +100,5 @@
 
 ## Publishing automation
 
-For information about our publishing automation and process, see
+For information about our publishing automation and release process, see
 https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.