Update wgsl-analyzer docs to correct install instructions

[glektarssza]

Current command yields an error:

Correct command:

[github-actions]

Note that configs.md or configs.txt will be regenerated by the docgen CI process. Edit the Lua source file instead. For details on generating documentation, see: https://github.com/neovim/nvim-lspconfig/blob/master/CONTRIBUTING.md#generating-docs

[github-actions]

Note that configs.md or configs.txt will be regenerated by the docgen CI process. Edit the Lua source file instead. For details on generating documentation, see: https://github.com/neovim/nvim-lspconfig/blob/master/CONTRIBUTING.md#generating-docs