adding docs

.github/workflows/docs.yml

@@ -44,6 +44,7 @@ jobs:
           php src/bin/generate-docs.php src/web/BenchmarkResult.php docs/assertions/benchmark.md
           php src/bin/generate-docs.php src/test/CookieState.php docs/cookies.md
           php src/bin/generate-docs.php src/test/ActingAs.php docs/logging-in.md
+          php src/bin/generate-docs.php src/test/SnapshotAssertions.php docs/snapshots.md
 
       - name: Add files
         run: git add -A docs/