docs: fix broken link (#456)

Readme.md

@@ -2,7 +2,7 @@
 
 > Capi is a work in progress. The documentation may not reflect the current implementation. **Expect a stable release and proper documentation in early 2023**.
 
-Capi is a declarative, TypeScript-first toolkit for crafting interactions with Substrate-based chains. It consists of [FRAME](https://docs.substrate.io/v3/runtime/frame/) utilities and [a high-level functional effect system](https://github.com/paritytech/zones) and [effects](./effects), which facilitate multistep, multichain interactions without compromising either performance or safety.
+Capi is a declarative, TypeScript-first toolkit for crafting interactions with Substrate-based chains. It consists of [FRAME](https://docs.substrate.io/reference/glossary/#frame) utilities and [a high-level functional effect system](https://github.com/paritytech/zones) and [effects](./effects), which facilitate multistep, multichain interactions without compromising either performance or safety.
 
 - [Examples &rarr;](./examples)<br />SHOW ME THE CODE
 - [API Reference &rarr;](https://deno.land/x/capi/mod.ts)<br />A generated API reference, based on type signatures and in-source comments.