Typo Update slashing-explained.md

[famouswizard]

Description

There is a minor grammatical issue in the documentation where the phrase "force exited" is used. The correct terminology should be "forced exit", as it better aligns with standard phrasing and makes the meaning clearer.

Changes

• Replaced "force exited" with "forced exit" in the sentence:

  The validator is forced exit and removed from the [validator pool](../staking-glossary.md#validator-pool).
  

Why This Is Important

Correct terminology ensures the documentation is clear and consistent. Using "forced exit" is the proper phrasing in the context of Ethereum staking, helping users understand the process better and avoid any confusion. Making this change improves the accuracy of the documentation and enhances readability.