Fix RefreshContextForIdeAction call to pass correct column (#458)

This fixes this error:
E1002 15:51:49.912757 76190 interceptor.go:51] /exa.language_server_pb.LanguageServerService/RefreshContextForIdeAction: invalid position (row 258, col 258): character 258 out of range [0, 18] for line 258

Author: dimfeld

autoload/codeium.vim

@@ -473,7 +473,7 @@ endfunction
 function! codeium#RefreshContext() abort
   " current buffer is 1
   try
-    call codeium#server#Request('RefreshContextForIdeAction', {'active_document': codeium#doc#GetDocument(1, line('.'), line('.'))})
+    call codeium#server#Request('RefreshContextForIdeAction', {'active_document': codeium#doc#GetDocument(1, line('.'), col('.'))})
   catch
     call codeium#log#Exception()
   endtry