The README file in this repo has some bad links - [404:NotFound]

**Describe the bug**
The markup version of the readme that is displayed in the main page for this repo contains the following links:
Status code [404:NotFound] - Link: https://keyword-2-ecd7b.firebaseapp.com/
Status code [404:NotFound] - Link: https://github.com/GoogleChromeLabs/quicklink/blob/master/#custom-ignore-patterns

(The links in the readme’s markdown may appear different to the link above extracted from the markup)

**To Reproduce**
Find the links under "demo" & "custom ignore patterns list"

**Expected behavior**
Links should work!

**Version:**
n/a

**Additional context, screenshots, screencasts**

The bad link was found by a tool I very recently created as part of an new experimental hobby project: https://github.com/MrCull/GitHub-Repo-ReadMe-Dead-Link-Finder
I (a human) verified that this link is broken (for me) and have manually logged this Issue (i.e. this Issue has not been created by a bot).
If this has been in any way helpful then please consider giving the above Repo a Star.

If you have any feedback on the information provided here, or on the tool itself, then please feel free to share your thoughts and pass on the feedback.