docs: fix wrong doc link (#5471)

Fix that link for `releasing.md` in `docs/README.md` got 404.
2021-07-19 17:31:22 +08:00 · 2021-07-19 17:31:22 +08:00 · bc1c1283a9
--- a/docs/README.md
+++ b/docs/README.md
@ -4,4 +4,4 @@
 - [Change Linguist's behaviour with overrides](overrides.md)
 - [Troubleshooting](troubleshooting.md)
 - [Contributing guidelines](/CONTRIBUTING.md)
- [Releasing Linguist](/releasing.md) (Only applicable to GitHub staff)
+- [Releasing Linguist](releasing.md) (Only applicable to GitHub staff)