[release/8.0] [browser] fix MSBuild typo (#91127)

* fix typo

* typo

---------

Co-authored-by: pavelsavara <[email protected]>

Author: github-actions[bot]

src/mono/nuget/Microsoft.NET.Sdk.WebAssembly.Pack/build/Microsoft.NET.Sdk.WebAssembly.Browser.targets

@@ -224,7 +224,7 @@ Copyright (c) .NET Foundation. All rights reserved.
       <_WasmRuntimePackVersion>%(ResolvedRuntimePack.NuGetPackageVersion)</_WasmRuntimePackVersion>
     </PropertyGroup>
 
-    <Error Code="WASM0005" Message="Unnable to resolve WebAssembly runtime pack version" Condition="'$(_WasmRuntimePackVersion)' == ''" />
+    <Error Code="WASM0005" Text="Unable to resolve WebAssembly runtime pack version" Condition="'$(_WasmRuntimePackVersion)' == ''" />
   </Target>
 
   <Target Name="_ResolveWasmOutputs" DependsOnTargets="ResolveReferences;PrepareResourceNames;ComputeIntermediateSatelliteAssemblies;_ResolveWasmConfiguration;_WasmNativeForBuild;_GetWasmRuntimePackVersion">