💡 Add urls to Swift versions

Author: oschrenk

.github/workflows/swift.yml

@@ -6,9 +6,12 @@ jobs:
     strategy:
       matrix:
         os: [macos-15]
+        # supported versions:
+        # https://github.com/swift-actions/setup-swift/blob/main/src/swift-versions.ts
         swift: ["6.0.2"]
     runs-on: ${{ matrix.os }}
     steps:
+      # https://github.com/swift-actions/setup-swift
       - uses: swift-actions/setup-swift@v2
         with:
           swift-version: ${{ matrix.swift }}