Performed spell check across the rest of code base, and enahnced the yaml paraser code a little (#895)

* Performed spell check across the entire documentation

Thank you once again!

* Performed spell check across the most of code base
Folders been checked:
- agents
- cli
- memory
- project
- tasks
- telemetry
- tools
- translations

* Trying to add a max_token for the agents, so they limited by number of tokens.

* Performed spell check across the rest of code base, and enahnced the yaml paraser code a little

* Small change in the main agent doc

* Improve _save_file method to handle both dict and str inputs

- Add check for dict type input
- Use json.dump for dict serialization
- Convert non-dict inputs to string
- Remove type ignore comments

---------

Co-authored-by: João Moura <joaomdmoura@gmail.com>

tests/task_test.py

@@ -109,7 +109,7 @@ def test_task_callback():
         task_completed.assert_called_once_with(task.output)
 
 
-def test_task_callback_returns_task_ouput():
+def test_task_callback_returns_task_output():
     from crewai.tasks.output_format import OutputFormat
 
     researcher = Agent(