fix: use standard env var name, xargs -r, and Any CPU platform in benchmark steps

Agent-Logs-Url: https://github.com/petesramek/polyline-algorithm-csharp/sessions/1c7e3b25-3784-4e15-8f10-1bed76e67480

Co-authored-by: petesramek <2333452+petesramek@users.noreply.github.com>

Author: Copilot

.github/workflows/publish-documentation.yml

@@ -99,25 +99,26 @@ jobs:
       - name: 'Run benchmarks for v${{ env.friendly-version }}'
         shell: bash
         env:
-          benchmarks-artifacts: /tmp/benchmarks
+          BENCHMARKS_ARTIFACTS: /tmp/benchmarks
         run: |
           dotnet run \
             --project benchmarks/PolylineAlgorithm.Benchmarks/PolylineAlgorithm.Benchmarks.csproj \
             --configuration Release \
+            /p:Platform="Any CPU" \
             --framework ${{ vars.DEFAULT_BUILD_FRAMEWORK || 'net10.0' }} \
             -- --filter ${{ vars.BENCHMARKDOTNET_FILTER || '*' }} \
                --exporters GitHub \
                --memory \
                --iterationTime 100 \
                --join \
-               --artifacts ${{ env.benchmarks-artifacts }}/
+               --artifacts $BENCHMARKS_ARTIFACTS/
 
       - name: 'Inject benchmark results into guide for v${{ env.friendly-version }}'
         shell: bash
         env:
-          benchmarks-artifacts: /tmp/benchmarks
+          BENCHMARKS_ARTIFACTS: /tmp/benchmarks
         run: |
-          find ${{ env.benchmarks-artifacts }} -name "*-report-github.md" | sort | xargs cat > /tmp/benchmark_results.md
+          find "$BENCHMARKS_ARTIFACTS" -name "*-report-github.md" | sort | xargs -r cat > /tmp/benchmark_results.md
           awk '/{benchmarks_section}/{while((getline line < "/tmp/benchmark_results.md") > 0) print line; close("/tmp/benchmark_results.md"); next} {print}' \
             "api-reference/${{ env.friendly-version }}/guide/benchmarks.md" > /tmp/benchmarks.md
           mv /tmp/benchmarks.md "api-reference/${{ env.friendly-version }}/guide/benchmarks.md"