Update README.md

Author: LumaKernel

README.md

@@ -17,6 +17,7 @@ call ddc#custom#patch_global('sourceOptions', {
     \ 'file': {
     \   'mark': 'F',
     \   'isVolatile': v:true,
+    \   'minAutoCompleteLength': 1000,
     \   'forceCompletionPattern': '\S/\S*',
     \ }})
 call ddc#custom#patch_filetype(