Add .NET 9 to 10 performance report for WASM AOT (#4894)

* Add reports for wasm aot

* Change minuses to pluses for change percent

Author: caaavik-msft

reports/net9to10/README.md

@@ -7,4 +7,5 @@ This directory contains reports detailing performance changes that occurred betw
 - CoreCLR Arm64 Linux: ([Regressions](./linux-arm64-ampere_regression_report.md), [Improvements](./linux-arm64-ampere_improvement_report.md))
 - Mono x64 Linux: ([Regressions](./linux-mono-tiger_regression_report.md), [Improvements](./linux-mono-tiger_improvement_report.md))
 - MonoAOT Arm64 Linux: ([Regressions](./linux-monoaot-ampere_regression_report.md), [Improvements](./linux-monoaot-ampere_improvement_report.md))
-- WASM x64 Linux: ([Regressions](./linux-wasm-tiger_regression_report.md), [Improvements](./linux-wasm-tiger_improvement_report.md))
+- WASM x64 Linux: ([Regressions](./linux-wasm-tiger_regression_report.md), [Improvements](./linux-wasm-tiger_improvement_report.md))
+- WASM AOT x64 Linux (Viper): ([Regressions](./linux-wasmaot-viper_regression_report.md), [Improvements](./linux-wasmaot-viper_improvement_report.md))