config: default formatting and imports to gopls

autoload/go/config.vim

@@ -311,7 +311,7 @@ function! go#config#FmtAutosave() abort
 endfunction
 
 function! go#config#ImportsAutosave() abort
-  return get(g:, 'go_imports_autosave', 0)
+  return get(g:, 'go_imports_autosave', 1)
 endfunction
 
 function! go#config#SetFmtAutosave(value) abort
@@ -355,11 +355,11 @@ function! go#config#DeclsMode() abort
 endfunction
 
 function! go#config#FmtCommand() abort
-  return get(g:, "go_fmt_command", "gofmt")
+  return get(g:, "go_fmt_command", 'gopls')
 endfunction
 
 function! go#config#ImportsMode() abort
-  return get(g:, "go_imports_mode", "goimports")
+  return get(g:, "go_imports_mode", 'gopls')
 endfunction
 
 function! go#config#FmtOptions() abort
@@ -384,7 +384,7 @@ function! go#config#RenameCommand() abort
 endfunction
 
 function! go#config#GorenameBin() abort
-  return get(g:, "go_gorename_bin", "gopls")
+  return get(g:, "go_gorename_bin", 'gopls')
 endfunction
 
 function! go#config#GorenamePrefill() abort

doc/vim-go.txt

@@ -1350,10 +1350,10 @@ By default it's enabled >
                                                           *'g:go_fmt_command'*
 
 Use this option to define which tool is used to format code. Valid options are
-`gofmt`, `goimports`, and `gopls`. By default `gofmt` is used.
+`gofmt`, `goimports`, and `gopls`. By default `gopls` is used.
 >
 
-  let g:go_fmt_command = "gofmt"
+  let g:go_fmt_command = 'gopls'
 <
                                                           *'g:go_fmt_options'*
 
@@ -1413,18 +1413,18 @@ it's causing problems on some Vim versions. This has no effect if
 Use this option to auto |:GoImports| on save. When both
 'g:go_imports_autosave' and 'g:go_fmt_autosave' are enabled and both
 'g:go_fmt_command' and 'g:go_imports_mode' are set to `goimports`, `goimports`
-will be run only once. By default it's disabled.
+will be run only once. By default it's enabled.
 >
-  let g:go_imports_autosave = 0
+  let g:go_imports_autosave = 1
 <
                                                          *'g:go_imports_mode'*
 
 Use this option to define which tool is used to adjust imports. Valid options
 are `goimports` and `gopls`. The buffer will not be formatted when this is set
-to `gopls`. By default `goimports` is used.
+to `gopls`. By default `gopls` is used.
 >
 
-  let g:go_imports_mode = "goimports"
+  let g:go_imports_mode = 'gopls'
 <
                                                      *'g:go_mod_fmt_autosave'*