Fix after review.

Author: andreibancioiu

docs/developers/meta/sc-build-reference.md

@@ -149,9 +149,11 @@ After building the contracts, there are three more operations left to perform, b
 
 ### g. Cleaning a project
 
-Calling `cargo run clean` in the meta crate will run `cargo clean` in all wasm crates and delete the `output` folder.
+In order to clean a project and remove all build artifacts, run the following command:
 
-Note that even the clean operation relies on the ABI, in order to reach all the wasm crates.
+```sh
+sc-meta all clean
+```
 
 [comment]: # (mx-context-auto)
 

docs/developers/meta/sc-meta-cli.md

@@ -388,7 +388,7 @@ This command is similar to `build-dbg`, in that it provides a shorthand for buil
 
 ### Calling `clean`
 
-Calling `cargo run clean` in the meta crate will delete the `output` folder and clean outputs of the Rust crates.
+Calling `sc-meta all clean` in the contract folder will remove all build artifacts, including the `output` folder.
 
 [comment]: # (mx-context-auto)