Fix typo in docstring

[thisac]

• Fixes typo in attribute causing link to not work properly.
• Also removes a few unnecessary whitespaces in docstring.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 86.70%. Comparing base (7f63c78) to head (dfbbc0a).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #525 +/- ## ========================================== - Coverage 89.65% 86.70% -2.96% ========================================== Files 24 24 Lines 1760 1760 ========================================== - Hits 1578 1526 -52 - Misses 182 234 +52 ```

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