Align release workflow with master

Author: lesbass

.github/workflows/release.yml

@@ -30,11 +30,11 @@ jobs:
         with:
           dotnet-version: 10.0.x
 
-      - name: Verify release comes from main
+      - name: Verify release comes from master
         shell: bash
         run: |
-          git fetch origin main
-          git merge-base --is-ancestor "$GITHUB_SHA" origin/main
+          git fetch origin master
+          git merge-base --is-ancestor "$GITHUB_SHA" origin/master
 
       - name: Resolve version
         id: version

README.md

@@ -115,6 +115,6 @@ The CI workflow restores, builds, tests, and packs the library on every push and
 pull request. The generated NuGet package is uploaded as a build artifact.
 
 The release workflow publishes to nuget.org only from `v*` tags whose commit is
-contained in `main`. Publishing uses NuGet Trusted Publishing with the GitHub
+contained in `master`. Publishing uses NuGet Trusted Publishing with the GitHub
 environment `nuget`; configure the nuget.org policy with `release.yml` and
 environment `nuget`.