Fix the Page Builder versions count

[shenzhaoyan]

https://github.com/qor5/admin/blob/main/pagebuilder/models.go#L82

[deepsource-io]

Here's the code health analysis summary for commits af569ae..fce06a8. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Test coverage	✅ Success		View Check ↗
Go	✅ Success		View Check ↗

Code Coverage Report

Metric	Aggregate	Go
Composite Coverage	40.1%	40.1%
Line Coverage	40.1%	40.1%

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
pagebuilder/page.go	91.34% <100.00%> (ø)

... and 2 files with indirect coverage changes