fix readme example

[edg-l]

The example was made before we had some kind of error checking

[github-actions]

Benchmarking (Linux) factorial

Compiling factorial (factorial.con)
Finished release in 33.462755ms
Running 5000000 iterations
Using input value: 20
Concrete Result = 2432902008176640000 Time taken : 96.72 ms
Rust Result = 2432902008176640000 Time taken : 60.54 ms

Benchmarking (Linux) fib

Compiling fib (fib.con)
Finished release in 27.132472ms
Running 5000 iterations
Using input value: 20
Concrete Result = 6765 Time taken : 136.75 ms
Rust Result = 6765 Time taken : 85.76 ms

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.86%. Comparing base (fb55ec7) to head (7831f44).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #220   +/-   ##
=======================================
  Coverage   56.86%   56.86%           
=======================================
  Files          25       25           
  Lines        5437     5437           
=======================================
  Hits         3092     3092           
  Misses       2345     2345           

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[github-actions]

Benchmarking (macOS) factorial

Compiling factorial (factorial.con)
Finished release in 629.26875ms
Running 5000000 iterations
Using input value: 20
Concrete Result = 2432902008176640000 Time taken : 29.75 ms
Rust Result = 2432902008176640000 Time taken : 23.69 ms

Benchmarking (macOS) fib

Compiling fib (fib.con)
Finished release in 123.143542ms
Running 5000 iterations
Using input value: 20
Concrete Result = 6765 Time taken : 92.91 ms
Rust Result = 6765 Time taken : 102.35 ms