fix matrix-workflow

Author: sbillinge

.github/workflows/matrix-and-codecov-on-merge-to-main.yml

@@ -12,7 +12,7 @@ on:
 
 jobs:
   coverage-and-matrix:
-    uses: Billingegroup/release-scripts/.github/workflows/_coverage-and-matrix.yml@v0
+    uses: Billingegroup/release-scripts/.github/workflows/_matrix-and-codecov-on-merge-to-main.yml@v0
     with:
       project: diffpy.utils
       c_extension: false