Fix wasm template README

[yamachu]

README has some typos and invalid arguments that is passed to dotnet cli.

before

# ~/Projects/github.com/yamachu/try-net7-dotnet-webassembly/wasmconsole-rc1 $ [master]
LANG=en_US.UTF-8;  dotnet run -c Debug -r browser-wasm -h=nodejs

Description:
  .NET Run Command

Usage:
  dotnet run [<applicationArguments>...] [options]

Arguments:
  <applicationArguments>  Arguments passed to the application that is being run. []

Options:
  -c, --configuration <CONFIGURATION>     The configuration to run for. The default for most projects is 'Debug'.
  -f, --framework <FRAMEWORK>             The target framework to run for. The target framework must also be specified in the project file.
  -r, --runtime <RUNTIME_IDENTIFIER>      The target runtime to run for.
  --project <project>                     The path to the project file to run (defaults to the current directory if there is only one project).
  -p, --property <property>               Properties to be passed to MSBuild.
  -lp, --launch-profile <launch-profile>  The name of the launch profile (if any) to use when launching the application.
  --no-launch-profile                     Do not attempt to use launchSettings.json to configure the application.
  --no-build                              Do not build the project before running. Implies --no-restore.
  --interactive                           Allows the command to stop and wait for user input or action (for example to complete authentication).
  --no-restore                            Do not restore the project before building.
  --sc, --self-contained                  Publish the .NET runtime with your application so the runtime doesn't need to be installed on the target machine.
                                          The default is 'true' if a runtime identifier is specified.
  --no-self-contained                     Publish your application as a framework dependent application. A compatible .NET runtime must be installed on the target machine to run your application.
  -v, --verbosity <LEVEL>                 Set the MSBuild verbosity level. Allowed values are q[uiet], m[inimal], n[ormal], d[etailed], and diag[nostic].
  -a, --arch <arch>                       The target architecture.
  --os <os>                               The target operating system.
  -?, -h, --help                          Show command line help.

after

# ~/Projects/github.com/yamachu/try-net7-dotnet-webassembly/wasmconsole-rc1 $ [master]
LANG=en_US.UTF-8; dotnet run -c Debug -r browser-wasm --h=node

/usr/local/share/dotnet/sdk/7.0.100-rc.1.22431.12/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(1136,5): warning NETSDK1179: One of '--self-contained' or '--no-self-contained' options are required when '--runtime' is used. [/Users/yk-yamada/Projects/github.com/yamachu/try-net7-dotnet-webassembly/wasmconsole-rc1/wasmconsole-rc1.csproj]
WasmAppHost --runtime-config /Users/yk-yamada/Projects/github.com/yamachu/try-net7-dotnet-webassembly/wasmconsole-rc1/bin/Debug/net7.0/browser-wasm/AppBundle//wasmconsole-rc1.runtimeconfig.json --h=node
Running: node main.mjs
Using working directory: /Users/yk-yamada/Projects/github.com/yamachu/try-net7-dotnet-webassembly/wasmconsole-rc1/bin/Debug/net7.0/browser-wasm/AppBundle
mono_wasm_runtime_ready fe00e07a-5519-4dfe-b35a-f867dbaf2e28
Hello, World! Greetings from node version: v16.15.1
Hello, Console!

[ghost]

I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label.

[lambdageek]

Thanks!

[pavelsavara]

many thanks!

[pavelsavara]

/backport to release/7.0

[github-actions]

Started backporting to release/7.0: https://github.com/dotnet/runtime/actions/runs/3067629366

[github-actions]

@pavelsavara an error occurred while backporting to release/7.0, please check the run log for details!

Error: @pavelsavara is not a repo collaborator, backporting is not allowed. If you're a collaborator please make sure your dotnet team membership visibility is set to Public on https://github.com/orgs/dotnet/people?query=pavelsavara

[pavelsavara]

/backport to release/7.0

[github-actions]

Started backporting to release/7.0: https://github.com/dotnet/runtime/actions/runs/3067647370

[pavelsavara]

/backport to release/7.0-rc2

[github-actions]

Started backporting to release/7.0-rc2: https://github.com/dotnet/runtime/actions/runs/3069479243