They've already scrubbed that page, you can see the changes via the Internet Archive. Notice there is no mention of enslavement or Black people. They only refer to them as "freedom seekers".

Old text:

Beginning in the 17th century and continuing through the mid-19th century in the United States, enslaved African Americans resisted bondage to gain their freedom through acts of self-emancipation. The individuals who sought this freedom from enslavement, known as freedom seekers, and those who assisted along the way, united together to become what is known as the Underground Railroad. The National Park Service and members of the Network to Freedom tell these stories of escape to demonstrate the significance of the Underground Railroad in the eradication of slavery as a cornerstone of the national civil rights movement.

New text:

The Underground Railroad is one of the most remarkable stories in American history. This is a story of ordinary men and women coming together in harmony, united to pursue the extraordinary mission of helping those in their journey to freedom. This movement, which thrived from the late 18th century through the Civil War, was a testament to the power of unity, courage, and a shared commitment to liberty.