Typo/Misspelling

[MackRoe]

In Exercize 2:
fossile should be fossil
conpare should be compare
feed should be feeds
"Does the function handles every possible input correctly?" should be "Does the function handle every possible input correctly?"
"Add the necessary logic to make sure the function handle every possible input properly." should be "Add the necessary logic to make sure the function handles every possible input properly."

In Pytest Fixtures:
"Now, let’s write some unit test for the above class in a different file:" should be "Now, let’s write some unit tests for the above class in a different file:"

In Exercise 4:
gaurd should be guard

In Solution to Exercise 1:
"Floating-point error can causes the result of an calculation differ slightly from the correct answer." should be "Floating-point error can cause the result of a calculation to differ slightly from the correct answer."