[postgreSql] Remove extra 'n' in sample data

[andrepereiradasilva]

Pull Request for new Issue.

Summary of Changes

Extra 'n' in sample data install on postgresql

Testing Instructions

Obvious. For me is a direct merged by review.
But ok, very simple code review.

Documentation Changes Required

None

Notes

Found by @jreys in GsoC multilingual project.

[alikon]

I have tested this item ✅ successfully on

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[jreys]

I have tested this item ✅ successfully on

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[brianteeman]

RTC

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[jeckodevelopment]

I have tested this item ✅ successfully on d1e7ea3

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[andrepereiradasilva]

I have tested this item ✅ successfully on d1e7ea3

just to make travis happy

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