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

vintro

2023-08-14 f1c9ca495e450ecb62dade70c4b60d86e106f79c

 quartz/components/scripts/graph.inline.ts

@@ -1,4 +1,4 @@
import { ContentDetails } from "../../plugins/emitters/contentIndex"
import type { ContentDetails } from "../../plugins/emitters/contentIndex"
import * as d3 from "d3"
import { registerEscapeHandler, removeAllChildren } from "./util"
import { CanonicalSlug, getCanonicalSlug, getClientSlug, resolveRelative } from "../../path"