docs: note about existing content at same path on different branches

vintro

2023-08-14 f1c9ca495e450ecb62dade70c4b60d86e106f79c

 quartz/plugins/filters/draft.ts

@@ -2,7 +2,7 @@

export const RemoveDrafts: QuartzFilterPlugin<{}> = () => ({
  name: "RemoveDrafts",
  shouldPublish([_tree, vfile]) {
  shouldPublish(_ctx, [_tree, vfile]) {
    const draftFlag: boolean = vfile.data?.frontmatter?.draft ?? false
    return !draftFlag
  },