Update README.md

Author: maxprogrammer007

algorithms/linfa-trees/README.md

@@ -50,12 +50,14 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("Accuracy: {:.2}", cm.accuracy());
     Ok(())
 }
+```
+
 Run this example with:
 
-bash
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+```bash
+
 cargo run --release --example iris_random_forest
+```
 Examples
 There is an example in the examples/ directory showing how to use decision trees. To run, use:
 
@@ -71,5 +73,3 @@ Dual‐licensed to be compatible with the Rust project.
 
 Licensed under the Apache License, Version 2.0 http://www.apache.org/licenses/LICENSE-2.0 or the MIT license http://opensource.org/licenses/MIT, at your option. This file may not be copied, modified, or distributed except according to those terms.
 
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