docs: correct README.md link path (foundry-rs#5647)

Author: moreal

crates/anvil/README.md

@@ -13,7 +13,7 @@
 
 ## Installation
 
-`anvil` binary is available via [`foundryup`](../README.md#installation).
+`anvil` binary is available via [`foundryup`](../../README.md#installation).
 
 ### Installing from source
 

crates/chisel/README.md

@@ -43,7 +43,7 @@ simple as installing Chisel via `foundryup`. For information on features, usage,
 
 To install `chisel`, simply run `foundryup`!
 
-If you do not have `foundryup` installed, reference the Foundry [installation guide](../README.md#installation).
+If you do not have `foundryup` installed, reference the Foundry [installation guide](../../README.md#installation).
 
 ## Usage
 

crates/cli/README.md

@@ -4,7 +4,7 @@ The CLIs are written using [clap's](https://docs.rs/clap) [derive feature](https
 
 ## Installation
 
-See [Installation](../README.md#Installation).
+See [Installation](../../README.md#Installation).
 
 ## Usage