rm mention of diffpy.structure, add c extensions

Author: bobleesj

.coveragerc

@@ -1,6 +1,6 @@
 [run]
 source =
-    diffpy.structure
+    diffpy.pdffit2
 [report]
 omit =
     */python?.?/*

.gitattributes

@@ -9,4 +9,4 @@ jobs:
   build:
     uses: Billingegroup/release-scripts/.github/workflows/_check-news-item.yml@v0
     with:
-      project: diffpy.structure
+      project: diffpy.pdffit2

.github/workflows/check-news-item.yml

@@ -8,14 +8,14 @@ on:
     types:
       - prereleased
       - published
-  workflow_dispatch: null
+  workflow_dispatch:
 
 jobs:
   coverage:
     uses: Billingegroup/release-scripts/.github/workflows/_matrix-and-codecov-on-merge-to-main.yml@v0
     with:
-      project: diffpy.structure
-      c_extension: false
+      project: diffpy.pdffit2
+      c_extension: true
       headless: false
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}