[Old docs] Relative links

Author: chenglou

pages/docs/manual/v8.0.0/build-performance.mdx

@@ -63,7 +63,7 @@ In short, thanks to our bsc compiler and bsb build system's architecture, we're
 
 ## Speed Up Incremental Build
 
-ReScript uses the concept of interface files (`.rei`) (or, equivalently, [module signatures](/docs/manual/latest/module#signatures)). Exposing only what you need naturally speeds up incremental builds. E.g. if you change a `.re` file whose corresponding `.rei` file doesn't expose the changed part, then you've reduced the amount of dependent files you have to rebuild.
+ReScript uses the concept of interface files (`.rei`) (or, equivalently, [module signatures](module.md#signatures)). Exposing only what you need naturally speeds up incremental builds. E.g. if you change a `.re` file whose corresponding `.rei` file doesn't expose the changed part, then you've reduced the amount of dependent files you have to rebuild.
 
 <!-- TODO: validate this -->
 

pages/docs/manual/v8.0.0/variant.mdx

@@ -157,7 +157,7 @@ If you come from an untyped language, you might be tempted to try `type myType =
 
 ### Interop with JavaScript
 
-_This section assumes knowledge about our [FFI](/docs/reason-compiler/latest/interop-overview). Skip this if you haven't felt the itch to use variants for wrapping JS functions yet_.
+_This section assumes knowledge about our JavaScript interop. Skip this if you haven't felt the itch to use variants for wrapping JS functions yet_.
 
 Quite a few JS libraries use functions that can accept many types of arguments. In these cases, it's very tempting to model them as variants. For example, suppose there's a `myLibrary.draw` JS function that takes in either a `number` or a `string`. You might be tempted to bind it like so: