Fixed typo in bitbucket import

What does this MR do?

This fixed a typo in the BitBucket Import - Limitations article

What are the relevant issue numbers?

N/A

Does this MR meet the acceptance criteria?

• Documentation created/updated
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Security reports checked/validated by reviewer