README: fix broken link to linting docs (#229)

Files in the `exercism/docs` repo were recently moved around.

See:
- exercism/docs#86

README.md

@@ -32,7 +32,7 @@ Global options:
 
 ## Linting
 
-The primary function of configlet is to do _linting_: checking if a track's configuration files are properly structured - both syntactically and semantically. Misconfigured tracks may not sync correctly, may look wrong on the website, or may present a suboptimal user experience, so configlet's guards play an important part in maintaining the integrity of Exercism. The full list of rules that are checked by the linter can be found [here](https://github.com/exercism/v3-docs/blob/main/anatomy/tracks/configlet/linting.md).
+The primary function of configlet is to do _linting_: checking if a track's configuration files are properly structured - both syntactically and semantically. Misconfigured tracks may not sync correctly, may look wrong on the website, or may present a suboptimal user experience, so configlet's guards play an important part in maintaining the integrity of Exercism. The full list of rules that are checked by the linter can be found [here](https://github.com/exercism/docs/blob/main/building/configlet/lint.md).
 
 The `configlet lint` command is currently in the process of being implemented.