fix: use new workspace reload command

[eero-lehtinen]

Description of changes

There is an error when saving Cargo.toml. The plugin tries to call a non-existent command.

"Cargo.toml" 19L, 599B written
Error detected while processing BufWritePost Autocommands for "*/Cargo.toml":
Error executing lua callback: /home/eero/repos/rustaceanvim/lua/rustaceanvim/lsp.lua:184: Command not found: RustReloadWorkspace
stack traceback:
        [C]: in function 'RustReloadWorkspace'
        /home/eero/repos/rustaceanvim/lua/rustaceanvim/lsp.lua:184: in function </home/eero/repos/rustaceanvim/lua/rustaceanvim/lsp.lua:183> 

I changed the command to the current one. I first tried to call the lua function directly, but it prompted to press enter, so I opted for calling it with a vim command and silent!. Maybe you have a better way of achieving this, but this works.

Things done

• Tested, as applicable:
  • Manually
  • Added busted specs
• Fits CONTRIBUTING.md

[mrcjkb]

Thanks 😃