replace config.toml to bootstrap.toml in src:tools

Author: Shourya742

CONTRIBUTING.md

@@ -153,7 +153,7 @@ MIRI_LOG=rustc_mir::interpret=info,miri::stacked_borrows ./miri run tests/pass/v
 
 Note that you will only get `info`, `warn` or `error` messages if you use a prebuilt compiler.
 In order to get `debug` and `trace` level messages, you need to build miri with a locally built
-compiler that has `debug=true` set in `config.toml`.
+compiler that has `debug=true` set in `bootstrap.toml`.
 
 #### Debugging error messages
 

cargo-miri/src/setup.rs

@@ -115,7 +115,7 @@ pub fn setup(
         // https://github.com/rust-lang/miri/issues/1421,
         // https://github.com/rust-lang/miri/issues/2429). Looks like setting
         // `RUSTC_WRAPPER` to the empty string overwrites `build.rustc-wrapper` set via
-        // `config.toml`.
+        // `bootstrap.toml`.
         command.env("RUSTC_WRAPPER", "");
 
         if show_setup {