Broken references in Manifest Incubations

[dontcallmedom-bot]

While crawling Manifest Incubations, the following links to other specifications were detected as pointing to non-existing anchors:

• https://wicg.github.io/file-system-access/#valid-suffix-code-points
• https://www.w3.org/TR/appmanifest/#dfn-display-mode
• https://www.w3.org/TR/appmanifest/#dfn-object
• https://www.w3.org/TR/appmanifest/#dfn-processing-extension-point-of-web-manifest

_{This issue was detected and reported semi-automatically by Strudy based on data collected in webref.}