Documentation Improvements on the waitForObject method

[gomboskriszta15]

Description

Related to the issue on Desktop with the same title.

[gomboskriszta15]

#1673 is also fixed in this PR

[iulianatodoran]

Checks in the Staging documentation

• ✅ the comments from https://github.com/alttester/AltTester-Desktop/issues/1894#issuecomment-2437509317 are fixed for all WaitForObject methods and the information is visible and well integrated inside the documentation structure for both Unity and Unreal sections
• ✅ there are no typos, formatting, layout issues, or missing information in the changed areas

Conclusion

The expected behaviors are achieved. Moving the ticket to Done.