feat: add reference for RUST_BACKTRACE environment variable

codegen/src/env_variables.rs

@@ -17,9 +17,17 @@ Overrides the Biome binary being used. This allows you, for example, to use a sy
 
 If you don't define this variable, Biome will automatically detect the correct binary for your platform.
 
-```
+```shell
 # Nix derivation example; the binary path comes from "${pkgs.biome}/bin/biome"
 BIOME_BINARY=/nix/store/68fyfw1hidsqkal1839whi3nzgvqv4pa-biome-1.0.0/bin/biome npx @biomejs/biome format .
+```
+
+### `RUST_BACKTRACE`
+
+Enables capturing the backtrace when Biome panicked. This allows you to identify where the panic occurred.
+
+```shell
+RUST_BACKTRACE=1 npx @biomejs/biome check .
 ```"#;
 
 pub fn generate_env_variables() -> Result<()> {

src/content/docs/reference/environment_variables.md

@@ -23,7 +23,15 @@ Overrides the Biome binary being used. This allows you, for example, to use a sy
 
 If you don't define this variable, Biome will automatically detect the correct binary for your platform.
 
-```
+```shell
 # Nix derivation example; the binary path comes from "${pkgs.biome}/bin/biome"
 BIOME_BINARY=/nix/store/68fyfw1hidsqkal1839whi3nzgvqv4pa-biome-1.0.0/bin/biome npx @biomejs/biome format .
 ```
+
+### `RUST_BACKTRACE`
+
+Enables capturing the backtrace when Biome panicked. This allows you to identify where the panic occurred.
+
+```shell
+RUST_BACKTRACE=1 npx @biomejs/biome check .
+```