Change gofmt to goimports for the vim-go format command so imports are formatted correctly as well

dotfiles/config/nvim/init.vim

@@ -152,8 +152,8 @@ au FileType yaml setlocal tabstop=2 expandtab shiftwidth=2 softtabstop=2
 " Disable the rust style guide recommended 4 space indentation
 let g:rust_recommended_style=0
 
-" Explicitly provide vim-go the gofmt command
-let g:go_fmt_command = "gofmt"
+" Explicitly provide vim-go the goimports command
+let g:go_fmt_command = "goimports"
 
 " Enable more highlighting in vim-go
 let g:go_highlight_types = 1