feat: update precomiples doc

crates/core/machine/src/syscall/precompiles/README.md

@@ -188,7 +188,7 @@ pub fn default_syscall_map() -> HashMap<SyscallCode, Arc<dyn Syscall>> {
 
 ## Write Unit Tests for the New Precompile
 ### Create a New SP1 Test Package
-Create a new SP1 crate for your custom precompile test package inside the directory `sp1/tests`. An example `Cargo.toml` for this may look like
+Create a new SP1 crate for your custom precompile test package inside the directory `sp1/crates/test-artifacts`. An example `Cargo.toml` for this may look like
 ```toml
 [workspace]
 [package]
@@ -198,8 +198,8 @@ edition = "2021"
 publish = false
 
 [dependencies]
-sp1-zkvm = { path = "../../zkvm/entrypoint" }
-sp1-derive = { path = "../../derive" }
+sp1-zkvm = { path = "../../../../zkvm/entrypoint" }
+sp1-derive = { path = "../../../../derive" }
 num-bigint = "0.4.6"
 rand = "0.8.5"
 ```
@@ -208,8 +208,7 @@ Then implement the tests and run `cargo prove build` to generate an ELF file.
 ### Include the ELF File in `program.rs`
 In your main SP1 project, include the generated ELF file by updating `program.rs`. 
 ```rust
-pub const CUSTOM_PRECOMPILE_ELF: &[u8] =
-    include_bytes!("path/to/generated/elf/file");
+pub const CUSTOM_PRECOMPILE_ELF: &[u8] = include_elf!("your-test-crate-name");
 // Other ELF files...
 ```
 
@@ -230,10 +229,11 @@ mod tests {
         utils::{
             self,
             run_test_io,
-            tests::CUSTOM_PRECOMPILE_ELF,
         },
     };
 
+    use test_artifacts::CUSTOM_PRECOMPILE_ELF;
+
     #[test]
     fn test_custom_precompile() {
         utils::setup_logger();