rust/rust-error.md

@@ -11,7 +11,7 @@ fn f() -> Result<()> {
 
 fn main() -> Result<()> {
     f()?;
-		Ok(())
+    Ok(())
 }
 ```
 
@@ -25,7 +25,7 @@ fn f() -> Result<()> {
 
 fn main() -> Result<()> {
     f().unwrap();
-		Ok(())
+    Ok(())
 }
 ```