fix: update location for _tests-on-pr.yml

Author: John Halloran

.github/workflows/tests-on-pr.yml

@@ -1,15 +1,12 @@
 name: Tests on PR
 
 on:
-  push:
-    branches:
-      - main
   pull_request:
   workflow_dispatch:
 
 jobs:
-  validate:
-    uses: Billingegroup/release-scripts/.github/workflows/_tests-on-pr.yml@v0
+  tests-on-pr:
+    uses: scikit-package/release-scripts/.github/workflows/_tests-on-pr.yml@v0
     with:
       project: diffpy.snmf
       c_extension: false