fix get list position error

[trananhmanh89]

Pull Request for Issue # .

Summary of Changes

fix typo

Testing Instructions

Just create new instance of PositionsModel then use getList function.

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

Documentation Changes Required

[SharkyKZ]

I have tested this item ✅ successfully on 3016c55

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/30672.}

[infograf768]

I have tested this item ✅ successfully on 3016c55

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/30672.}

[infograf768]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/30672.}

[infograf768]

tks