HIP documentation update for clarity on definition

[saadrahim]

Associated JIRA ticket number/Github issue number

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update
• Continuous Integration

What were the changes?

Drop references to our competitor's GPUs

Why are these changes needed?

Clarity

Updated CHANGELOG?

• Yes
• No, Does not apply to this PR.

Added/Updated documentation?

• Yes
• No, Does not apply to this PR.

Additional Checks

• I have added tests relevant to the introduced functionality, and the unit tests are passing locally.
• Any dependent changes have been merged.